Enable ProactorEventLoop on windows for ipykernel #4239

Job	Run time
test_docs	2s
link_check	3s
Test Lint	3s
Test Prereleases	3s
check_release	3s
test_without_debugpy (ubuntu-latest, 3.10)	3s
Test Minimum Versions	2s
Make SDist	3s
build (ubuntu-latest, qt6, 3.10)	3s
build (windows-latest, qt5, 3.10)	3s
build (ubuntu-latest, qt5, 3.14)	3s
build (macos-latest, qt6, 3.10)	3s
build (macos-latest, qt5, 3.10)	3s
build (ubuntu-latest, qt6, 3.13)	2s
build (ubuntu-latest, qt5, pypy-3.11)	3s
build (windows-latest, qt6, pypy-3.11)	3s
build (ubuntu-latest, qt6, pypy-3.11)	3s
build (macos-latest, qt6, 3.13)	4s
build (ubuntu-latest, qt6, 3.12)	3s
build (macos-latest, qt6, 3.11)	3s
build (ubuntu-latest, qt5, 3.10)	3s
build (windows-latest, qt6, 3.13)	2s
build (windows-latest, qt5, 3.14)	3s
build (macos-latest, qt5, 3.14)	3s
build (windows-latest, qt6, 3.10)	3s
build (macos-latest, qt6, pypy-3.11)	4s
build (windows-latest, qt6, 3.12)	3s
build (macos-latest, qt5, pypy-3.11)	3s
build (windows-latest, qt5, pypy-3.11)	3s
build (macos-latest, qt6, 3.12)	3s
build (windows-latest, qt6, 3.11)	3s
build (ubuntu-latest, qt6, 3.11)	3s
Install from SDist and Test	1s
coverage	1s
	1m 36s

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