[TensorExpr] Replace `ExprHandle` with `const Expr*` in `Substitute`. (#35173)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/35173
Differential Revision: D20585577
Test Plan: Imported from OSS
Pulled By: ZolotukhinM
fbshipit-source-id: 902f9740a0b97c3d2a0eef2c274d8227b975b3cb
Author
Mikhail Zolotukhin
