[New msys2-runtime version] Cygwin: revert use of CancelSyncronousIo on wait_thread. #5271
Description
Cygwin: revert use of CancelSyncronousIo on wait_thread.
It appears this is causing hangs on native x86_64 in similar scenarios
as the hangs on ARM64, because `CancelSynchronousIo` is returning `TRUE`
but not canceling the `ReadFile` call as expected.
Addresses: https://github.com/msys2/MSYS2-packages/issues/4340#issuecomment-2491401847
Fixes: b091b47b9e56 ("cygthread: suspend thread before terminating.")
Signed-off-by: Jeremy Drake <[email protected]>