fix(windows): keep stdin open for conpty processes #1728

Job	Run time
Determine jobs to run	19s
Build Turborepo (ubuntu, self-hosted, linux, x64, metal)	1m 37s
Build Turborepo (macos, macos-12)	6m 41s
Build Turborepo (windows, windows-latest)	9m 18s
Turborepo rust check	1m 20s
Turborepo Examples	0s
Rust lints	55s
Turborepo rust clippy	1m 25s
Turborepo Rust testing on ubuntu	2m 22s
Turborepo Rust testing on macos	13m 32s
Turborepo Rust testing on windows	14m 48s
Turborepo Integration (ubuntu-latest)	4m 42s
Turborepo Integration (macos-12)	13m 45s
Turborepo Integration (windows-latest)	23m 51s
Turborepo Test Summary	1s
Cleanup / cleanup	7s
	1h 34m 43s

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