[rls-v3.11] graph: re-enable sdpa training bwd#4825

ElaineBao wants to merge 7 commits intosyurkevi/fused_sdpa_training_backport311uxlfoundation/oneDNN:syurkevi/fused_sdpa_training_backport311from

yixin/sdpa_ukernel_train_backportuxlfoundation/oneDNN:yixin/sdpa_ukernel_train_backportCopy head branch name to clipboard