wsi/x11: Bump maximum number of outstanding COMPLETE events.
Fixes a "regression" where comically large FPS tests regressed. Signed-off-by:Hans-Kristian Arntzen <post@arntzen-software.no> Fixes: 19dba854 ("wsi/x11: Rewrite implementation to always use threads.") Reviewed-By:
Mike Blumenkrantz <michael.blumenkrantz@gmail.com> Part-of: <mesa/mesa!30638>