import FastPitchModel fails with unrelated error from prompth_encoder.py
**Describe the bug**

Running `tutorials/tts/FastPitch_Finetuning.ipynb` on Colab get error on `import FastPitchModel`

**Steps/Code to reproduce bug**
```
[/usr/local/lib/python3.10/dist-packages/nemo/collections/nlp/modules/common/prompt_encoder.py](https://localhost:8080/#) in TPMLP()
    138     def __init__(
    139         self,
--> 140         config: ModelParallelConfig,
    141         total_virtual_tokens: int,
    142         hidden_size: int,

NameError: name 'ModelParallelConfig' is not defined
```
