Reduce context stack contention under free-threaded Python

[RazerM]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 96.89441% with 15 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.08%. Comparing base (b09a2ae) to head (4c0cc3a).
⚠️ Report is 12 commits behind head on main.

Files with missing lines	Patch %	Lines
src/rust/src/lib.rs	92.56%	11 Missing ⚠️
tests/test_speedups.py	98.41%	2 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #607      +/-   ##
==========================================
+ Coverage   84.28%   85.08%   +0.79%     
==========================================
  Files          44       45       +1     
  Lines        5440     5684     +244     
  Branches      446      459      +13     
==========================================
+ Hits         4585     4836     +251     
+ Misses        725      719       -6     
+ Partials      130      129       -1     

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.