solidify_wallpaper: try to avoid clicking anything in the menu

When we right-click then left-click, we should move away from
the menu to avoid actually clicking anything in it.

Signed-off-by: Adam Williamson <awilliam@redhat.com>

lib/utils.pm

@@ -1372,6 +1372,7 @@ sub solidify_wallpaper {
         # https://bugzilla.redhat.com/show_bug.cgi?id=1933118
         mouse_set 512, 384;
         mouse_click 'right';
+        mouse_set 480x 384;
         mouse_click 'left';
         hold_key 'alt';
         send_key 'd';