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Fix Windows env filtering and React test output stalls #1901

Job	Run time
build and typecheck (windows-latest)	8m 32s
test (windows-latest, unit)	8m 29s
build and typecheck (ubuntu-latest)	1m 29s
test (ubuntu-latest, 1/2)	1m 56s
test (windows-latest, 2/2)	8m 3s
test (ubuntu-latest, unit)	2m 17s
test (windows-latest, 1/2)	7m 13s
test (ubuntu-latest, 2/2)	1m 50s
live-e2e	0s
done	3s
	39m 52s