pytorch

195cb4ef - update scatter formula (#64546)

update scatter formula (#64546) Summary: Fixes https://github.com/pytorch/pytorch/issues/63430 Already tested OpInfo gradient tests https://github.com/pytorch/pytorch/blob/544c8e6a5d26efdf1cf679b313893fe119825930/torch/testing/_internal/common_methods_invocations.py#L8575-L8577 Pull Request resolved: https://github.com/pytorch/pytorch/pull/64546 Reviewed By: saketh-are Differential Revision: D30768759 Pulled By: albanD fbshipit-source-id: 27d144971c51a956a232fc7d02df5c9d2706d565