Fix `nn.Module.state_dict()` (#72780)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/72778
TODO
- [x] Waiting for a conclusion from discussion in the issue.
- [x] Still bugs in handling misplaced args. Need a re-design to cover all corner cases.
TODO changes
- [x] Put deprecated signature to the second.
- [x] Change to kwargs, positional deprecated
- [x] `DeprecationWarning` add comment on why not use it
- [x] Remove unnecessary comments.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/72780
Reviewed By: george-qi
Differential Revision: D34398656
Pulled By: albanD
fbshipit-source-id: e8f2708e3dfd925ff354e098a66905f9775f4e0a
(cherry picked from commit 7f8eaf05fc48b333d22a07af57a7024b8b9ec6bf)
