tests: Add shot test for pointer cursor behavior

Add a regression test to verify that the cursor image is correctly
updated when setting a cursor surface with an already committed buffer
from a previous pointer entry, without recommitting a cursor buffer for
the current entry.

Signed-off-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
5 jobs for fix-set-cursor-reentry in 3 minutes and 50 seconds (queued for 59 seconds)
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