gh-87063: Add `closed` attribute to multiprocessing.Process #130467

Job	Run time
Change detection / Compute changed files	13s
Check if generated files are up to date	3m 27s
Ubuntu SSL tests with OpenSSL (ubuntu-22.04, 3.0.15)	1m 55s
Ubuntu SSL tests with OpenSSL (ubuntu-22.04, 3.1.7)	2m 7s
Ubuntu SSL tests with OpenSSL (ubuntu-22.04, 3.2.3)	1m 54s
Check if Autoconf files are up to date	21s
Hypothesis tests on Ubuntu	5m 11s
Ubuntu SSL tests with OpenSSL (ubuntu-22.04, 3.3.2)	2m 5s
Address sanitizer	9m 20s
Windows MSI${{ '' }}	0s
CIFuzz	0s
WASI / build and test	6m 20s
Thread sanitizer (free-threading) / Thread sanitizer	7m 30s
Thread sanitizer / Thread sanitizer	3m 0s
macOS (free-threading) / build and test (ghcr.io/cirruslabs/macos-runner:sonoma)	5m 47s
macOS / build and test (ghcr.io/cirruslabs/macos-runner:sonoma)	4m 7s
macOS / build and test (macos-13)	9m 6s
Ubuntu / build and test (ubuntu-22.04)	7m 28s
Ubuntu (free-threading) / build and test (ubuntu-22.04)	9m 20s
Windows (free-threading) / build (arm64)	3m 13s
Windows / build (arm64)	2m 8s
Windows / build and test (Win32)	14m 30s
Windows (free-threading) / build and test (Win32)	14m 23s
Windows / build and test (x64)	14m 20s
Windows (free-threading) / build and test (x64)	14m 22s
Docs / Docs	2m 0s
Docs / Doctest	14m 37s
Docs / Docs (Oldest Sphinx)	2m 4s
All required checks pass	3s
	2h 40m 51s

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