Add parameter of embedding_read_fusion for MCoreGPTModel
This PR is stale because it has been open for 14 days with no activity. Remove stale label or comment or update or this will be closed in 7 days. This PR needs to wait until the corresponding PR for Megatron-LM is merged. This PR is stale because it has been open for 14 days with no activity. Remove stale label or comment or update or this will be closed in 7 days. This PR was closed because it has been inactive for 7 days since being marked as stale.
# What does this PR do ?

This PR adds the support for embedding_read_fusion parameter in MCoreGPTModel. This new parameter will be added into Megatron-LM.

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

# Changelog 
Add the embedding_read_fusion parameter, which is got from self.cfg.

# Usage
* You can potentially add a usage example below

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

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**PR Type**:
- [ ] New Feature
- [ ] Bugfix
- [ ] Documentation

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# Additional Information
* Related to # (issue)
