transformers

7c63e6fc - [`PEFT`] Fix PEFT + gradient checkpointing (#25846)

[`PEFT`] Fix PEFT + gradient checkpointing (#25846) * fix PEFT + gradient checkpointing * add disable RG * polish tests * fix comment * Revert "fix comment" This reverts commit b85386f50d2b104bac522e823c47b7e232116a47. * final explanations and tests