[Static Runtime] Only run ReplaceWithCopy pass when enable_out_variant is true (#54111)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/54111
If we only run the ReplaceWithCopy pass when enable_out_variant is true, there is no need register a default op implementation.
Reviewed By: edvgha
Differential Revision: D27036077
fbshipit-source-id: f615f5d8b84629044af1c554421ea5e505e93239
