transformers

ada24def - [run_lm_finetuning] Tweak fix for non-long tensor, close #2728

[run_lm_finetuning] Tweak fix for non-long tensor, close #2728 see 1ebfeb79469d544a2bd817aa32c77e0514485ff9 and #2728 Co-Authored-By: Lysandre Debut <lysandre.debut@reseau.eseo.fr>