transformers

621b49a6 - fix: restore `_attn_implementation `and fix request offset in `generate_batch()` (#45943)

fix: restore `_attn_implementation `and fix request offset in `generate_batch()` (#45943) * fix: restore _attn_implementation and fix request offset in generate_batch() * Lower the attn switch to the innermost scope and robust request reordering * inference mode to no grad --------- Co-authored-by: remi-or <remi.pierre_o@orange.fr>