Update T5 attention-mask shapes to be compatible with all attention-backend in new TE versions
[🤖]: Hi @huvunvidia 👋,

We wanted to let you know that a [CICD pipeline](https://github.com/NVIDIA/NeMo/actions/runs/11859622450) for this PR just finished successfully

So it might be time to merge this PR or get some approvals

I'm just a bot so I'll leave it you what to do next.

//cc @pablo-garay @ko3n1g [🤖]: Hi @huvunvidia 👋,

We wanted to let you know that a [CICD pipeline](https://github.com/NVIDIA/NeMo/actions/runs/11873631626) for this PR just finished successfully

So it might be time to merge this PR or get some approvals

I'm just a bot so I'll leave it you what to do next.

//cc @pablo-garay @ko3n1g <!-- pylint-output-strict-mode-false -->

beep boop 🤖: 🙏 The following files have warnings. In case you are familiar with these, please try helping us to improve the code base.

---

Your code was analyzed with PyLint. The following annotations have been identified:

```
************* Module nemo.collections.llm.t5.data.mock
nemo/collections/llm/t5/data/mock.py:33:0: C0115: Missing class docstring (missing-class-docstring)
nemo/collections/llm/t5/data/mock.py:71:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/data/mock.py:82:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/data/mock.py:87:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/data/mock.py:92:4: C0116: Missing function or method docstring (missing-function-docstring)
************* Module nemo.collections.llm.t5.model.t5
nemo/collections/llm/t5/model/t5.py:45:0: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:98:0: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:111:0: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:123:0: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:135:0: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:143:0: C0115: Missing class docstring (missing-class-docstring)
nemo/collections/llm/t5/model/t5.py:172:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:227:0: C0115: Missing class docstring (missing-class-docstring)
nemo/collections/llm/t5/model/t5.py:236:0: C0115: Missing class docstring (missing-class-docstring)
nemo/collections/llm/t5/model/t5.py:244:0: C0115: Missing class docstring (missing-class-docstring)
nemo/collections/llm/t5/model/t5.py:262:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:266:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:289:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:292:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:295:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:299:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:304:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:325:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:332:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:37:4: W0611: Unused import transformer_engine (unused-import)
************* Module nemo.collections.nlp.models.language_modeling.megatron_lm_encoder_decoder_model
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:102:0: C0301: Line too long (144/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:138:0: C0301: Line too long (126/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:231:0: C0301: Line too long (123/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:253:0: C0301: Line too long (120/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:261:0: C0301: Line too long (180/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:263:0: C0301: Line too long (140/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:537:0: C0301: Line too long (153/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:562:0: C0301: Line too long (146/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:563:0: C0301: Line too long (124/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:579:0: C0301: Line too long (180/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:619:0: C0301: Line too long (121/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:647:0: C0301: Line too long (150/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:648:0: C0301: Line too long (127/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:800:0: C0301: Line too long (120/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:924:0: C0301: Line too long (145/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:992:0: C0301: Line too long (136/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:993:0: C0301: Line too long (123/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1162:0: C0301: Line too long (125/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1228:0: C0301: Line too long (149/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1235:0: C0301: Line too long (121/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1248:0: C0301: Line too long (143/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1351:0: C0301: Line too long (129/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1353:0: C0301: Line too long (151/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1355:0: C0301: Line too long (166/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1356:0: C0301: Line too long (144/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1358:0: C0301: Line too long (138/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1359:0: C0301: Line too long (130/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1396:0: C0301: Line too long (149/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1422:0: C0301: Line too long (143/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1715:0: C0301: Line too long (125/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1743:0: C0301: Line too long (128/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:258:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:349:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:512:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:519:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:560:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:661:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:904:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1045:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1172:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1202:4: C0116: Missing function or method docstring (missing-function-docstring)

-----------------------------------
Your code has been rated at 9.36/10
```

---

Thank you for improving NeMo's documentation! <!-- pylint-output-strict-mode-false -->

beep boop 🤖: 🙏 The following files have warnings. In case you are familiar with these, please try helping us to improve the code base.

---

Your code was analyzed with PyLint. The following annotations have been identified:

```
************* Module nemo.collections.llm.t5.data.mock
nemo/collections/llm/t5/data/mock.py:33:0: C0115: Missing class docstring (missing-class-docstring)
nemo/collections/llm/t5/data/mock.py:71:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/data/mock.py:82:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/data/mock.py:87:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/data/mock.py:92:4: C0116: Missing function or method docstring (missing-function-docstring)
************* Module nemo.collections.llm.t5.model.t5
nemo/collections/llm/t5/model/t5.py:45:0: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:98:0: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:111:0: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:123:0: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:135:0: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:143:0: C0115: Missing class docstring (missing-class-docstring)
nemo/collections/llm/t5/model/t5.py:172:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:227:0: C0115: Missing class docstring (missing-class-docstring)
nemo/collections/llm/t5/model/t5.py:236:0: C0115: Missing class docstring (missing-class-docstring)
nemo/collections/llm/t5/model/t5.py:244:0: C0115: Missing class docstring (missing-class-docstring)
nemo/collections/llm/t5/model/t5.py:262:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:266:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:289:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:292:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:295:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:299:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:304:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:325:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:332:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/llm/t5/model/t5.py:37:4: W0611: Unused import transformer_engine (unused-import)
************* Module nemo.collections.nlp.models.language_modeling.megatron_lm_encoder_decoder_model
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:102:0: C0301: Line too long (144/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:138:0: C0301: Line too long (126/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:231:0: C0301: Line too long (123/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:253:0: C0301: Line too long (120/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:261:0: C0301: Line too long (180/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:263:0: C0301: Line too long (140/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:537:0: C0301: Line too long (153/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:562:0: C0301: Line too long (146/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:563:0: C0301: Line too long (124/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:579:0: C0301: Line too long (180/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:619:0: C0301: Line too long (121/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:647:0: C0301: Line too long (150/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:648:0: C0301: Line too long (127/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:800:0: C0301: Line too long (120/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:924:0: C0301: Line too long (145/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:992:0: C0301: Line too long (136/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:993:0: C0301: Line too long (123/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1162:0: C0301: Line too long (125/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1228:0: C0301: Line too long (149/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1235:0: C0301: Line too long (121/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1248:0: C0301: Line too long (143/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1351:0: C0301: Line too long (129/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1353:0: C0301: Line too long (151/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1355:0: C0301: Line too long (166/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1356:0: C0301: Line too long (144/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1358:0: C0301: Line too long (138/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1359:0: C0301: Line too long (130/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1396:0: C0301: Line too long (149/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1422:0: C0301: Line too long (143/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1715:0: C0301: Line too long (125/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1743:0: C0301: Line too long (128/119) (line-too-long)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:258:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:349:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:512:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:519:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:560:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:661:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:904:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1045:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1172:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/nlp/models/language_modeling/megatron_lm_encoder_decoder_model.py:1202:4: C0116: Missing function or method docstring (missing-function-docstring)

-----------------------------------
Your code has been rated at 9.36/10
```

---

Thank you for improving NeMo's documentation! [🤖]: Hi @huvunvidia 👋,

We wanted to let you know that a [CICD pipeline](https://github.com/NVIDIA/NeMo/actions/runs/11898874484) for this PR just finished successfully

So it might be time to merge this PR or get some approvals

I'm just a bot so I'll leave it you what to do next.

//cc @pablo-garay @ko3n1g
# What does this PR do ?

Update T5 attention-mask shapes (from b1ss to b11s) to be compatible with all attention-backend in new TE versions.
Along with that, the existing checkpoints used for CICD also need to be updated.

**Collection**: [Note which collection this PR will affect]

# Changelog 
- Add specific line by line info of high level changes in this PR.

# Usage
* You can potentially add a usage example below

```python
# Add a code snippet demonstrating how to use this 
```

# GitHub Actions CI

The Jenkins CI system has been replaced by GitHub Actions self-hosted runners.

The GitHub Actions CI will run automatically when the "Run CICD" label is added to the PR.
To re-run CI remove and add the label again.
To run CI on an untrusted fork, a NeMo user with write access must first click "Approve and run".

# Before your PR is "Ready for review"
**Pre checks**:
- [ ] Make sure you read and followed [Contributor guidelines](https://github.com/NVIDIA/NeMo/blob/main/CONTRIBUTING.md)
- [ ] Did you write any new necessary tests?
- [ ] Did you add or update any necessary documentation?
- [ ] Does the PR affect components that are optional to install? (Ex: Numba, Pynini, Apex etc)
  - [ ] Reviewer: Does the PR have correct import guards for all optional libraries?
  
**PR Type**:
- [ ] New Feature
- [ ] Bugfix
- [ ] Documentation

If you haven't finished some of the above items you can still open "Draft" PR.


## Who can review?

Anyone in the community is free to review the PR once the checks have passed. 
[Contributor guidelines](https://github.com/NVIDIA/NeMo/blob/main/CONTRIBUTING.md) contains specific people who can review PRs to various areas.

# Additional Information
* Related to # (issue)
