src: fix libuv assertion on windows #3693

Job	Run time
Build slim tarball	2m 46s
aarch64-darwin: with shared libraries	22m 45s
aarch64-linux: with shared libraries	19m 41s
x86_64-darwin: with shared libraries	30m 51s
x86_64-linux: with shared libraries	23m 14s
	1h 39m 17s

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