[testing] atan2: Enable cases where self broadcasts (#57608)
Summary:
Just a follow-up
Pull Request resolved: https://github.com/pytorch/pytorch/pull/57608
Reviewed By: albanD
Differential Revision: D28249409
Pulled By: mruberry
fbshipit-source-id: a1ce2cd736ac5547cecb3e21aaa50637917284bc
