Backports from `anyio` (old `main`) branch to `main` branch #3421

Job	Run time
Test Lint	1m 0s
Test Minimum Versions	2m 37s
Make SDist	24s
test_without_debugpy (ubuntu-latest, 3.9)	2m 5s
check_release	1m 38s
Test Prereleases	2m 9s
test_docs	42s
build (ubuntu-latest, 3.11)	4m 53s
build (ubuntu-latest, 3.10)	4m 58s
build (ubuntu-latest, 3.9)	5m 1s
build (ubuntu-latest, pypy-3.10)	3m 59s
build (windows-latest, 3.10)	6m 25s
build (ubuntu-latest, 3.12)	6m 1s
build (ubuntu-latest, 3.13)	4m 57s
build (windows-latest, 3.9)	7m 47s
build (windows-latest, 3.12)	8m 7s
build (macos-latest, 3.9)	5m 4s
build (macos-latest, 3.11)	2m 27s
build (windows-latest, pypy-3.10)	8m 35s
build (windows-latest, 3.13)	7m 52s
link_check	3m 38s
build (macos-latest, 3.10)	4m 45s
build (windows-latest, 3.11)	9m 17s
build (macos-latest, pypy-3.10)	4m 46s
build (macos-latest, 3.12)	5m 30s
build (macos-latest, 3.13)	4m 57s
Install from SDist and Test	2m 12s
coverage	0s
	2h 1m 46s

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