🚨 [ALM] Add base model without head (#45534)
* add a base model class
* ensure BC via conversion mapping
* auto classes
* test updates
* ensure BC for accessing attributes
* simplify conversion mapping
* convert modular
* convert modular
* apply to voxtral
* convert modular
* remove test_model_base_model_prefix overwrite
* make
* make
* XXXModel class in doc
* add GraniteSpeechPlusModel
* tests now have a base_model_class
* fix qwen2audio
* class level base mappings
* fix test_reverse_loading_mapping
* fix
* fix
* nit
* fix
* deprec in 5.7 -> 5.15
* fix flaky test
* fix flaky test
* fix flaky test
* remove forward_base_model_attrs
* _supports_attention_backend in PretrainedModel
* removed redundant get/set_input_embeddings
* remove requires_grad_ handling
* make fix-repo
* fix voxtral realtime
* update vibevoice_asr test
* update test
* Update src/transformers/models/audioflamingo3/modular_audioflamingo3.py
Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>
* Update src/transformers/models/audioflamingo3/modular_audioflamingo3.py
Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>
* Update src/transformers/models/glmasr/modeling_glmasr.py
Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>
* make fix-repo
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Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>
