torch.dtype alias (#14162)
* alias
* add tests
* feedback
* Fix failing test_dtype_alias pipeline tests
Cosmos pipelines keep the safety_checker in float32 and require it to be
passed explicitly on reload, mirroring their test_torch_dtype_dict
overrides. PRX skips dtype-dict/save-load tests because the custom
T5GemmaEncoder is not compatible with transformers v5; do the same for
test_dtype_alias.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
