[fix] torch.repeat : dim-0 backward (#45212)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/45201
Pull Request resolved: https://github.com/pytorch/pytorch/pull/45212
Reviewed By: mrshenli
Differential Revision: D23905545
Pulled By: albanD
fbshipit-source-id: c5bf9cf481c8cf3ccc1fdbfb364006b29f67dc9f
