[tensorexpr] Added logging info for SimplifierUnderContext (#62138)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/62138
Test Plan: Imported from OSS
Reviewed By: navahgar
Differential Revision: D29891257
Pulled By: huiguoo
fbshipit-source-id: c36b3d615fa2fe971d022111bef61ee843a9dbea
