[Bugfix] fix qwen3-asr response error

[jesse996]

Purpose

fix #33643

Test Plan

Test Result

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[gemini-code-assist]

Code Review

This pull request addresses a response error in the Qwen3-ASR model by improving the handling of audio embeddings. The core change involves refactoring the creation of Qwen3ASRMultiModalDataParser to include expected_hidden_size during initialization. This is achieved by adding a get_data_parser method to Qwen3ASRProcessingInfo and updating Qwen3ASRMultiModalProcessor to use it. This change enables validation of audio embedding dimensions, preventing potential errors from mismatched shapes and improving the model's robustness. The refactoring also centralizes the parser creation logic, which is a good practice. The changes are correct and well-implemented.