Wav2Vec2 models must either throw or deal with add_apater (#15409)
* Wav2Vec2 models must either throw or deal with add_apater
Co-authored-by: Patrick von Platen <patrick.v.platen@gmail.com>
* Add pre-add_adapter backwards compatibility
* Add pre-add_adapter backwards compatibility
* Fix issue in tests/test_modeling_wav2vec2.py
Co-authored-by: Patrick von Platen <patrick.v.platen@gmail.com>
Co-authored-by: Patrick von Platen <patrick.v.platen@gmail.com>