[FX] Fix bare generic type annotations (#74135)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/74135
Test Plan: Imported from OSS
Reviewed By: pbelevich
Differential Revision: D34839339
Pulled By: jamesr66a
fbshipit-source-id: fd026cab684acaae9bf7c2fa4228ed8eb7aeb788
(cherry picked from commit 3acc565324e78bbabde3f796db9f5fcc99394d6b)
