Granite speech - minor fixes to support training with the HF trainer (#38833)
* ensure the query is updated during training
avoid unused parameters that DDP does not like
* avoid a crash when `kwargs` contain `padding=True`
trainers often pass this argument automatically
* minor
* Remove mel_spec lazy init, and rename to mel_filters.
this ensures save_pretrained will not crash when saving the processor during training
https://github.com/huggingface/transformers/blob/d5d007a1a0f0c11a726a54c8f00bd71825f84d02/src/transformers/feature_extraction_utils.py#L595
* minor - most feature extractors has a `sampling_rate` property