transformers

83fdd252 - [Seq2Seq Templates] Correct some TF-serving errors and add gradient checkpointing to PT by default. (#9334)

[Seq2Seq Templates] Correct some TF-serving errors and add gradient checkpointing to PT by default. (#9334) * correct tests * correct shape and get_tf_activation * more correction tf * add gradient checkpointing to templates * correct typo