[PR #10125/d58d2c3d backport][3.12] Disable zero copy writes in the StreamWriter

[patchback]

This is a backport of PR #10125 as merged into master (d58d2c3).

python/cpython#127656

Zero copy writes will return in a future version once a new cpython version is released.

[codspeed-hq]

CodSpeed Performance Report

Merging #10127 will degrade performances by 21.18%

_{Comparing patchback/backports/3.12/d58d2c3d0f8755dcd982071e3dc12e9f14db55f6/pr-10125 (78cddd6) with 3.12 (da4e00b)}

Summary

❌ 1 (👁 1) regressions
✅ 46 untouched benchmarks

Benchmarks breakdown

	Benchmark	3.12	patchback/backports/3.12/d58d2c3d0f8755dcd982071e3dc12e9f14db55f6/pr-10125	Change
👁	test_one_hundred_get_requests_with_512kib_chunked_payload[pyloop]	168.2 ms	213.4 ms	-21.18%

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.05%. Comparing base (da4e00b) to head (78cddd6).
Report is 1 commits behind head on 3.12.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             3.12   #10127      +/-   ##
==========================================
- Coverage   98.06%   98.05%   -0.02%     
==========================================
  Files         123      123              
  Lines       37143    37141       -2     
  Branches     4465     4468       +3     
==========================================
- Hits        36425    36419       -6     
- Misses        540      544       +4     
  Partials      178      178              

Flag	Coverage Δ
CI-GHA	97.94% <100.00%> (-0.02%)	⬇️
OS-Linux	97.64% <100.00%> (-0.02%)	⬇️
OS-Windows	94.57% <100.00%> (-0.02%)	⬇️
OS-macOS	96.76% <100.00%> (-0.02%)	⬇️
Py-3.10.11	96.61% <100.00%> (-0.02%)	⬇️
Py-3.10.15	97.19% <100.00%> (+0.02%)	⬆️
Py-3.11.10	97.22% <100.00%> (-0.02%)	⬇️
Py-3.11.9	96.69% <100.00%> (-0.02%)	⬇️
Py-3.12.7	97.71% <100.00%> (-0.02%)	⬇️
Py-3.13.0	96.54% <100.00%> (-0.02%)	⬇️
Py-3.13.1	97.68% <100.00%> (-0.02%)	⬇️
Py-3.9.13	96.54% <100.00%> (-0.02%)	⬇️
Py-3.9.20	97.08% <100.00%> (-0.05%)	⬇️
Py-pypy7.3.16	96.68% <100.00%> (-0.03%)	⬇️
VM-macos	96.76% <100.00%> (-0.02%)	⬇️
VM-ubuntu	97.64% <100.00%> (-0.02%)	⬇️
VM-windows	94.57% <100.00%> (-0.02%)	⬇️

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