[FX] Pass module's qualname to is_leaf_module (#44966)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/44966
Test Plan: Imported from OSS
Reviewed By: dzhulgakov
Differential Revision: D23790360
Pulled By: jamesr66a
fbshipit-source-id: 7ef569fd93646584b27af7a615fa69c8d8bbdd3b
