Fix hooks (#71970)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/71970
- Provide default arg for power SGD convenience wrapper that matches the main API default
Test Plan: CI
Reviewed By: H-Huang
Differential Revision: D33837457
fbshipit-source-id: 8f4efab4992b3fff09456a18db2c83e087c25bdf
(cherry picked from commit 83f52fb3c7c82d4f3cb07a9469cfac6ac5a49658)
