Replace handle atomically in IO::FileDescriptor#close
on Windows
#15165
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The spec introduced in #14698 fails on Windows very rarely (e.g. https://github.com/crystal-lang/crystal/actions/runs/11681506288/job/32532033082, https://github.com/crystal-lang/crystal/actions/runs/11642959689/job/32449149741). This PR seems to fix that; other platforms already do the same in
#system_close
, and double close remains an error.