[FIX] Fix speech2test modeling tests (#29672)
* fix speech_to_test generation tests
* Add details to comment
* Update tests/models/speech_to_text/test_modeling_speech_to_text.py
Co-authored-by: amyeroberts <22614925+amyeroberts@users.noreply.github.com>
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Co-authored-by: Yih-Dar <2521628+ydshieh@users.noreply.github.com>
Co-authored-by: amyeroberts <22614925+amyeroberts@users.noreply.github.com>
