Enable ProactorEventLoop on windows for ipykernel #3934

Job	Run time
Test Minimum Versions	2m 38s
Make SDist	23s
Test Lint	59s
check_release	1m 44s
test_without_debugpy (ubuntu-latest, 3.10)	2m 23s
Test Prereleases	2m 33s
link_check	3m 41s
test_docs	41s
build (windows-latest, qt5, 3.14)	2m 31s
build (windows-latest, qt6, pypy-3.11)	4m 26s
build (macos-latest, qt6, 3.10)	3m 39s
build (ubuntu-latest, qt5, 3.10)	2m 42s
build (windows-latest, qt6, 3.10)	3m 49s
build (ubuntu-latest, qt5, pypy-3.11)	3m 31s
build (ubuntu-latest, qt6, 3.13)	2m 34s
build (ubuntu-latest, qt5, 3.14)	2m 26s
build (macos-latest, qt5, 3.10)	2m 47s
build (windows-latest, qt6, 3.13)	3m 7s
build (windows-latest, qt5, pypy-3.11)	4m 14s
build (ubuntu-latest, qt6, pypy-3.11)	3m 25s
build (ubuntu-latest, qt6, 3.10)	2m 41s
build (ubuntu-latest, qt6, 3.11)	2m 29s
build (ubuntu-latest, qt6, 3.12)	2m 40s
build (macos-latest, qt6, pypy-3.11)	4m 39s
build (windows-latest, qt6, 3.11)	5m 33s
build (macos-latest, qt5, pypy-3.11)	5m 18s
build (windows-latest, qt5, 3.10)	3m 36s
build (macos-latest, qt6, 3.13)	3m 6s
build (windows-latest, qt6, 3.12)	2m 43s
build (macos-latest, qt6, 3.11)	3m 39s
build (macos-latest, qt6, 3.12)	2m 25s
build (macos-latest, qt5, 3.14)	2m 22s
Install from SDist and Test	2m 29s
coverage	0s
	1h 37m 53s

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