### Checklist Before Starting

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### What does this PR do?

there is a tricky bug in per_tensor_generator with
model.named_parameter().
"decoder.layers[n].mlp.router.expert_bias" in GPTModel is not registered
in named_parameter, but in state_dict(). Before this fix, the
router_bias or
`model.layers.{layer_number}.mlp.gate.e_score_correction_bias` is not
transfered from m-core to infer engine.





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### High-Level Design

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### Specific Changes

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### API

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```python
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### Additional Info.

- **Issue Number**: Fixes issue # or discussion # if any.
- **Training**: [Note which backend this PR will affect: FSDP, Megatron,
both, or none]
- **Inference**: [Note which backend this PR will affect: vLLM, SGLang,
both, or none]

### Checklist Before Submitting

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Guide](https://github.com/volcengine/verl?tab=readme-ov-file#contribution-guide).
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