transformers

8021c684 - Fix some bugs for two stage training of deformable detr (#25045)

Fix some bugs for two stage training of deformable detr (#25045) * Update modeling_deformable_detr.py Fix bugs for two stage training * Update modeling_deformable_detr.py * Add test_two_stage_training to DeformableDetrModelTest --------- Co-authored-by: yupeng.jia <yupeng.jia@momenta.ai>