Enable ProactorEventLoop on windows for ipykernel #4238

Job	Run time
Test Lint	51s
Make SDist	27s
check_release	1m 45s
Test Minimum Versions	2m 46s
Test Prereleases	2m 31s
test_without_debugpy (ubuntu-latest, 3.10)	2m 20s
link_check	2m 14s
build (ubuntu-latest, qt5, 3.14)	2m 40s
build (ubuntu-latest, qt6, 3.12)	2m 54s
build (ubuntu-latest, qt5, 3.10)	2m 41s
build (ubuntu-latest, qt6, 3.10)	2m 46s
build (windows-latest, qt5, 3.10)	4m 19s
build (windows-latest, qt5, 3.14)	4m 7s
build (windows-latest, qt6, 3.13)	4m 53s
build (ubuntu-latest, qt6, pypy-3.11)	3m 21s
build (windows-latest, qt5, pypy-3.11)	6m 51s
build (ubuntu-latest, qt6, 3.13)	2m 50s
build (windows-latest, qt6, pypy-3.11)	5m 46s
build (ubuntu-latest, qt5, pypy-3.11)	2m 54s
build (ubuntu-latest, qt6, 3.11)	2m 43s
build (windows-latest, qt6, 3.11)	4m 31s
build (windows-latest, qt6, 3.12)	4m 53s
build (macos-latest, qt6, 3.12)	4m 4s
build (macos-latest, qt6, pypy-3.11)	6m 11s
build (macos-latest, qt6, 3.10)	3m 59s
build (windows-latest, qt6, 3.10)	4m 8s
build (macos-latest, qt5, 3.14)	2m 59s
build (macos-latest, qt5, 3.10)	4m 16s
build (macos-latest, qt5, pypy-3.11)	4m 30s
build (macos-latest, qt6, 3.13)	3m 6s
build (macos-latest, qt6, 3.11)	2m 47s
test_docs	50s
Install from SDist and Test	2m 28s
coverage	7s
	1h 50m 28s

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