[PR #9029/466448c backport][3.10] Fix SSLContext creation in the TCPConnector with multiple loops

[bdraco]

(cherry picked from commit 466448c)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.76%. Comparing base (f5bf86a) to head (3b84395).
Report is 189 commits behind head on 3.10.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             3.10    #9042      +/-   ##
==========================================
- Coverage   97.76%   97.76%   -0.01%     
==========================================
  Files         108      108              
  Lines       34406    34399       -7     
  Branches     4084     4089       +5     
==========================================
- Hits        33636    33629       -7     
  Misses        575      575              
  Partials      195      195              

Flag	Coverage Δ
CI-GHA	97.65% <100.00%> (-0.01%)	⬇️
OS-Linux	97.33% <100.00%> (-0.01%)	⬇️
OS-Windows	94.89% <100.00%> (-0.01%)	⬇️
OS-macOS	97.02% <100.00%> (-0.01%)	⬇️
Py-3.10.11	97.11% <100.00%> (-0.01%)	⬇️
Py-3.10.14	97.04% <100.00%> (-0.01%)	⬇️
Py-3.11.9	97.27% <100.00%> (-0.01%)	⬇️
Py-3.12.5	97.37% <100.00%> (-0.01%)	⬇️
Py-3.8.10	94.53% <100.00%> (-0.01%)	⬇️
Py-3.8.18	96.85% <100.00%> (-0.01%)	⬇️
Py-3.9.13	97.01% <100.00%> (-0.01%)	⬇️
Py-3.9.19	96.95% <100.00%> (-0.01%)	⬇️
Py-pypy7.3.16	96.54% <100.00%> (+<0.01%)	⬆️
VM-macos	97.02% <100.00%> (-0.01%)	⬇️
VM-ubuntu	97.33% <100.00%> (-0.01%)	⬇️
VM-windows	94.89% <100.00%> (-0.01%)	⬇️

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