Add optional tensor arguments to (#63967)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/63435
Adds optional tensor arguments to check handling torch function checks. The only one I didn't do this for in the functional file was `multi_head_attention_forward` since that already took care of some optional tensor arguments but not others so it seemed like arguments were specifically chosen
Pull Request resolved: https://github.com/pytorch/pytorch/pull/63967
Reviewed By: albanD
Differential Revision: D30640441
Pulled By: ezyang
fbshipit-source-id: 5ef9554d2fb6c14779f8f45542ab435fb49e5d0f
