Implement named inference rule for mul
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/23193
Test Plan:
- [namedtensor ci]
gh-metadata: pytorch pytorch 23193 gh/zou3519/75/head
Imported from OSS
Differential Revision: D16494401
Pulled By: zou3519
fbshipit-source-id: 0e2395d7de39158ec51feed5da0389715ec52600
