Remove no_type_check_decorator from __all__ for Python >= 3.15

[donbarbos]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.38%. Comparing base (f684c9a) to head (b16ee88).
⚠️ Report is 1 commits behind head on main.

@@ Coverage Diff @@## main #699 +/- ##
=======================================
Coverage 97.38% 97.38% =======================================
Files 3 3 Lines 7687 7689 +2 =======================================
+ Hits 7486 7488 +2 
Misses 201 201 

Flag	Coverage Δ
3.10	88.98% <100.00%> (+<0.01%)	⬆️
3.10.4	88.98% <100.00%> (+<0.01%)	⬆️
3.11	88.21% <100.00%> (+<0.01%)	⬆️
3.11.0	87.44% <100.00%> (+<0.01%)	⬆️
3.12	88.16% <100.00%> (+<0.01%)	⬆️
3.12.0	88.15% <100.00%> (+<0.01%)	⬆️
3.13	81.65% <100.00%> (+<0.01%)	⬆️
3.13.0	82.38% <100.00%> (+<0.01%)	⬆️
3.14	78.83% <100.00%> (+<0.01%)	⬆️
3.9	89.69% <100.00%> (+<0.01%)	⬆️
3.9.12	89.69% <100.00%> (+<0.01%)	⬆️
pypy3.10	88.81% <100.00%> (+<0.01%)	⬆️
pypy3.11	88.07% <100.00%> (+<0.01%)	⬆️
pypy3.9	89.52% <100.00%> (+<0.01%)	⬆️

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Files with missing lines	Coverage Δ
src/typing_extensions.py	93.94% <100.00%> (+<0.01%)	⬆️

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[JelleZijlstra]

Some CI problem with codecov...

[AlexWaygood]

something something cloudflare outage?