Support op registration if name starts with underscore (_) (#32017)
Summary:
This is required for rehistering torchvision::_new_empty_tensor op
Pull Request resolved: https://github.com/pytorch/pytorch/pull/32017
Reviewed By: hl475
Differential Revision: D19399606
Pulled By: houseroad
fbshipit-source-id: 43e1f2d78d2a0310af347b42f7e9b54cd503a20d
