I merged my PR.

If it causes too many trouble in 3rd party C extensions (require to update too many C extensions before Python 3.13 beta1), I can make this change conditional only in the limited C API version 3.13.

See also my PR removing<unistd.h>: PR#108783.

⚠️⚠️⚠️ Buildbot failure⚠️⚠️⚠️

Hi! The buildbotAMD64 Windows11 Non-Debug 3.x has failed when building commit03c4080.

What do you need to do:

1. Don't panic.
2. Checkthe buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/914/builds/2761) and take a look at the build logs.
4. Check if the failure is related to this commit (03c4080) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/914/builds/2761

Failed tests:

• test.test_concurrent_futures.test_shutdown
• test.test_concurrent_futures.test_deadlock

Summary of the results of the build (if available):

==

Traceback (most recent call last):  File"b:\uildarea\3.x.ware-win11.nondebug\build\Lib\test\support\os_helper.py", line480, intemp_diryield path  File"b:\uildarea\3.x.ware-win11.nondebug\build\Lib\test\support\os_helper.py", line533, intemp_cwdyield cwd_dir  File"b:\uildarea\3.x.ware-win11.nondebug\build\Lib\test\libregrtest\main.py", line802, inmainself._main(tests, kwargs)  File"b:\uildarea\3.x.ware-win11.nondebug\build\Lib\test\libregrtest\main.py", line861, in_main    sys.exit(0)SystemExit:0Traceback (most recent call last):  File"b:\uildarea\3.x.ware-win11.nondebug\build\Lib\test\support\__init__.py", line207, in_force_runreturn func(*args)^^^^^^^^^^^PermissionError:[WinError 32] The process cannot access the file because it is being used by another process: 'B:\\uildarea\\3.x.ware-win11.nondebug\\build\\build\\test_python_4856�\\test_python_worker_13508�'