Consider reverting canonicalization rewrites in `fast_compile` mode.

### Description

Not sure this commit was warranted: https://github.com/aesara-devs/aesara/commit/8cbd9840d315a48dafb7f67e5d6cc470a0c84044

If no basic functionality depends on it, I would suggest we don't run canonicalizations in a `fast_compile` mode.