Windows: call `runtime.LockOSThread` in `network-setup` #13733

Job	Run time
check-paths / check	9s
package (mac, x86_64, macos-13)	14m 28s
package (mac, aarch64, macos-latest)	7m 53s
package (win, windows-2019)	24m 53s
package (linux, ubuntu-20.04)	7m 24s
Test Signing (Windows)	0s
Test Signing (macOS)	0s
	54m 47s

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