gh-87390: Fix starred tuple equality and pickling by mrahtz · Pull Request #92249 · python/cpython

Hilariously, before this PR, it turned out that *tuple[int] was equal to tuple[int]. Fixing it, I realised that pickling was also broken: it didn't preserve gaobject.starred. This PR fixes both.

I've tested for refleaks with python3 -m test -v test_genericalias -R 3:3, and it came back clean, so I think we're good.

@Fidget-Spinner I guess you're the one most familiar with this code? :)