transformers

e19c12e0 - enable graident checkpointing in DetaObjectDetection and add tests in Swin/Donut_Swin (#28615)

enable graident checkpointing in DetaObjectDetection and add tests in Swin/Donut_Swin (#28615) * enable graident checkpointing in DetaObjectDetection * fix missing part in original DETA * make style * make fix-copies * Revert "make fix-copies" This reverts commit 4041c86c29248f1673e8173b677c20b5a4511358. * remove fix-copies of DetaDecoder * enable swin gradient checkpointing * fix gradient checkpointing in donut_swin * add tests for deta/swin/donut * Revert "fix gradient checkpointing in donut_swin" This reverts commit 1cf345e34d3cc0e09eb800d9895805b1dd9b474d. * change supports_gradient_checkpointing pipeline to PreTrainedModel * Revert "add tests for deta/swin/donut" This reverts commit 6056ffbb1eddc3cb3a99e4ebb231ae3edf295f5b. * Revert "Revert "fix gradient checkpointing in donut_swin"" This reverts commit 24e25d0a14891241de58a0d86f817d0b5d2a341f. * Simple revert * enable deformable detr gradient checkpointing * add gradient in encoder