(fix): minimum python version 3.11 forNamedTuple with Generic

[ilan-gold]

I was off on the version in my old comment: python/cpython#92027

In any case, we can just use typing_extensions: python/typing_extensions#44 but I don't think it's worth it so we'll just correct the feature version for the check.

Previously, this was causing issues with 3.10 as this was the case not covered (this feature broke in 3.9, but is fixed in 3.11, and we special cased <3.10).

• Closes #
• Tests added
• Release note added (or unnecessary)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.64%. Comparing base (e0b81f1) to head (cb42f98).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1594      +/-   ##
==========================================
- Coverage   86.70%   83.64%   -3.07%     
==========================================
  Files          37       37              
  Lines        5974     5950      -24     
==========================================
- Hits         5180     4977     -203     
- Misses        794      973     +179     

Files	Coverage Δ
src/anndata/_settings.py	89.40% <100.00%> (-4.64%)	⬇️

... and 14 files with indirect coverage changes