pytorch

7ec0d6f0 - Moves SDPA backward helper native function to functionsmanual.cpp (#95821)

Moves SDPA backward helper native function to functionsmanual.cpp (#95821) ## Summary chunk_grad_outputs should have been created within functionsmanual.cpp to begin with. This removes it as a native function and adds to its appropriate home. Pull Request resolved: https://github.com/pytorch/pytorch/pull/95821 Approved by: https://github.com/cpuhrsch, https://github.com/albanD