xquartz: Ensure the mouse pointer is shown when switching to a native macOS alert or window

Fixes: https://github.com/XQuartz/XQuartz/issues/100
Signed-off-by: Jeremy Huddleston Sequoia <jeremyhu@apple.com>
(cherry picked from commit 4ae36f41)
3 jobs for server-1.20-branch in 6 minutes and 25 seconds
Status Job ID Name Coverage
  Docker Image
passed debian-testing #10856562

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  Build And Test
passed autotools-build-and-test #10856563

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passed meson-build-and-test #10856564

00:01:51