Add dummy op to use instead of searchsorted (#66964)
Summary:
Would help unblock https://github.com/pytorch/pytorch/issues/66818 if this actually works
Pull Request resolved: https://github.com/pytorch/pytorch/pull/66964
Reviewed By: mruberry
Differential Revision: D31817942
Pulled By: janeyx99
fbshipit-source-id: 9e9a2bcb0c0479ec7000ab8760a2e64bf0e85e95
