support using gradients named for outputs in derivatives (#63947)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/63947
Fixes #62196
Test Plan: Imported from OSS
Reviewed By: albanD
Differential Revision: D30541485
Pulled By: dagitses
fbshipit-source-id: ea1dd0edd1a51936a295631e52b85e9c022a9c87
