Fix audio assets from streaming
Some audio files were not correctly created when the data came from streaming and is decoded (i.e. is a numpy array representing the audio sample)

Fix https://github.com/huggingface/datasets-server/issues/1912

Bug was introduced in https://github.com/huggingface/datasets-server/pull/1788

Will have to delete `split-first-rows-from-streaming` cache responses with http_status 200 and audio  features since that date
Fix audio assets from streaming: Some audio files were not correctly created when the data came from streaming and is decoded (i.e. is a numpy array representing the audio sample)

Fix https://github.com/huggingface/datasets-server/issues/1912

Bug was introduced in https://github.com/huggingface/datasets-server/pull/1788

Will have to delete `split-first-rows-from-streaming` cache responses with http_status 200 and audio  features since that date