enable HF transformers 4.43.

## 🚀 Feature

enable HF transformers 4.43

### Motivation

HuggingFace Transformers 4.43.0 started using vmap in a path we are hitting:

https://github.com/huggingface/transformers/blob/df12d87d184db59aed00b6b22c2daff7bac95204/src/transformers/masking_utils.py#L347-L351

### Pitch

Maybe we can check for the presence and lookaside the `recent_torch` function to use the `older_torch` one instead...

Start by reviewing the Transformers masking_utils.py section at lines 347-351 and the issue's recent_torch and older_torch paths. Reproduce the vmap-related failure with HuggingFace Transformers 4.43.0, then verify that Lightning Thunder supports this version without regressing older versions.

Written by the indexing model from the issue text.