.github: Enable Linux CPU GHA on PRs (#56942)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/56942
Signed-off-by: Eli Uriegas <eliuriegas@fb.com>
Test Plan: Imported from OSS
Reviewed By: walterddr
Differential Revision: D28018455
Pulled By: seemethere
fbshipit-source-id: 2b4ba3d616c217b4e960871f1428dda03f2ad92a
