gh-108951: Document how to terminate an asyncio.TaskGroup (#123837) #125028

Job	Run time
Change detection / Compute changed files	7s
Check if generated files are up to date	2m 29s
Address sanitizer	7m 48s
Ubuntu SSL tests with OpenSSL (3.0.15)	1m 59s
Ubuntu SSL tests with OpenSSL (3.1.7)	1m 52s
Windows MSI${{ '' }}	0s
Ubuntu SSL tests with OpenSSL (3.2.3)	2m 8s
Docs	0s
Ubuntu SSL tests with OpenSSL (3.3.2)	2m 10s
Hypothesis tests on Ubuntu	5m 29s
CIFuzz	0s
WASI / build and test	5m 58s
Thread sanitizer / Thread sanitizer	4m 31s
Thread sanitizer (free-threading) / Thread sanitizer	7m 12s
Windows / build (arm64)	4m 4s
Windows (free-threading) / build (arm64)	3m 12s
Windows / build and test (Win32)	17m 13s
Windows (free-threading) / build and test (Win32)	24m 28s
Windows / build and test (x64)	15m 44s
Windows (free-threading) / build and test (x64)	24m 6s
macOS (free-threading) / build and test (ghcr.io/cirruslabs/macos-runner:sonoma)	4m 53s
macOS / build and test (ghcr.io/cirruslabs/macos-runner:sonoma)	5m 35s
macOS / build and test (macos-13)	10m 23s
Ubuntu / build and test	7m 16s
Ubuntu (free-threading) / build and test	9m 6s
All required checks pass	2s
	2h 47m 45s

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