## Summary
Fixes https://github.com/astral-sh/ty/issues/2015. We weren't recursing
into the value of a type alias when we should have been.
There are situations where we should also be recursing into the
bounds/constraints of a typevar. I initially tried to do that as well in
this PR, but that seems... trickier. For now I'm cutting scope; this PR
does, however, add several failing tests for those cases.
## Test Plan
added mdtests
