Update tiny models and a few fixes
# What does this PR do?

- Update tiny models, including:
  - Sam
  - BigCode
  - (recent) GPTNeoXForSequenceClassification
- Fix wrong condition introduced in my PR #22774 (it doesn't break things, but it will affect the creation of `pipeline_to_model_mapping` for new model types)
- Fix import in `test_pipelines_mask_generation.py`

2 fixes need @ArthurZucker .
_The documentation is not available anymore as the PR was closed or merged._<|||||>The result of `Check Tiny Models / Check tiny models (push)` could be ignored.