[Minor] Allow other field passing in generate besides input_ids

[frankaging]

Description

In generate() call, we only pass in the input_ids field and rely on huggingface module to populate the attention mask fields. We now pass in the whole user input dict instead.

Testing Done

Tutorial test run passed.

Checklist:

• My PR title strictly follows the format: [Your Priority] Your Title
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• I have added tests for my changes