[MusicGen] Add sampling rate to config (#26136)
* [MusicGen] Add sampling rate to config
* remove tiny
* make property
* Update tests/pipelines/test_pipelines_text_to_audio.py
Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>
* style
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Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>