pytorch

95ea778a - Set proper output differentiability for unique function (#47930)

Set proper output differentiability for unique function (#47930) Summary: Fixes https://github.com/pytorch/pytorch/issues/47851 Since the definitions of these functions in `native_functions.yaml` has special dispatch, we were already generating the proper `NotImplemented` behavior for these functions but we were wrongfully setting that gradient of all of the outputs. Added entries in `derivatives.yaml` to allow us to specify which outpus are differentiable or not. Pull Request resolved: https://github.com/pytorch/pytorch/pull/47930 Reviewed By: smessmer Differential Revision: D24960667 Pulled By: albanD fbshipit-source-id: 19e5bb3029cf0d020b31e2fa264b3a03dd86ec10