x/sys/windows: TestProcThreadAttributeHandleList failing with "The parameter is incorrect." on release-branch.go1.16

[bcmills]

--- FAIL: TestProcThreadAttributeHandleList (0.00s)
    syscall_windows_test.go:1047: The parameter is incorrect.
FAIL
FAIL	golang.org/x/sys/windows	1.629s

greplogs --dashboard -md -l -e 'FAIL: TestProcThreadAttributeHandleList' --since=2021-12-01

2021-12-13T22:30:07-03aa0b5-f1f3923/windows-386-2008
2021-12-13T22:30:07-03aa0b5-f1f3923/windows-amd64-2016
2021-12-13T22:30:07-03aa0b5-f1f3923/windows-amd64-race

[bcmills]

This is a release-blocker for the next Go 1.16 minor release via #11811.
The failing test was added in CL 371276.

It can be addressed by either fixing x/sys to work with Go 1.16, or backporting fixes to Go 1.16 to fix the failing test.

CC @zx2c4 @bufflig @golang/release.

[gopherbot]

Change https://golang.org/cl/371694 mentions this issue: windows: set pipe explicitly inheritable in test for go 1.16

[zx2c4]

Fixed with https://golang.org/cl/371694. Sorry about that.