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Update trl/chat template utils.py to support the new response-parsing API in transformers 5.13+, while…

Update trl/chat template utils.py to support the new response-parsing API in transformers 5.13+, while…: a task in HF ML Tasksmith (Harbor dataset). Module-level flag Add SUPPORTS RESPONSE TEMPLATE (a bool ) at module level, set to True when the installed transformers version is = 5.13.0.dev0…

The task

**Module-level flag** Add `_SUPPORTS_RESPONSE_TEMPLATE` (a `bool`) at module level, set to `True` when the installed transformers version is `>= 5.13.0.dev0` (compare with `packaging.version.Version`), and `False` otherwise.

Part of FineEnvs/HF_ML_Tasksmith.