TypeAliasType objects have no `__qualname__`

# Bug report

### Bug description:

This means that introspection is worse for type statements declared e.g. within class bodies.

A

cc @JelleZijlstra 

### CPython versions tested on:

3.12, 3.13, 3.14, 3.15, CPython main branch

### Operating systems tested on:

_No response_


### Linked PRs
* gh-139919
* gh-140177
* gh-140197