[JIT] Use GE optimizer guard in import (#38575)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/38575
Test Plan: Imported from OSS
Reviewed By: suo
Differential Revision: D21603086
Pulled By: jamesr66a
fbshipit-source-id: 4427efabfdcc449045485e1cd9c2740ea823cc9c
