fix(transformers) Fix training issue in TrainOneStepWrapper

[chenyingshu]

What does this PR do?

Fixes issue #1402 derived from PR #1337
Tested with

• Llama model training with either graph mode or pynative mode, with "static"/"dynamic"/"none" scaler type, in ms2.7.0 + transformers 4.54
• OmniGen2 training

Before submitting

• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
• Did you read the contributor guideline?
• Did you make sure to update the documentation with your changes? E.g. record bug fixes or new features in What's New. Here are the
  documentation guidelines
• Did you build and run the code without any errors?
• Did you report the running environment (NPU type/MS version) and performance in the doc? (better record it for data loading, model inference, or training tasks)
• Did you write any new necessary tests?

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