partial bugfix: [#36501] Blenderplayer can not change video resolution in Mac OSX

OSX support for native desktop resolution changing is not simple as for Windows or Linux.

The 'fix' here is at the interface level only.
Refer to the original bug report for the suggested native workaround, test patch and problems.

release/scripts/startup/bl_ui/properties_game.py

@@ -290,7 +290,9 @@ class RENDER_PT_game_player(RenderButtonsPanel, Panel):
     COMPAT_ENGINES = {'BLENDER_GAME'}
 
     def draw(self, context):
+        import sys
         layout = self.layout
+        not_osx = sys.platform != "darwin"
 
         gs = context.scene.game_settings
 
@@ -301,14 +303,17 @@ class RENDER_PT_game_player(RenderButtonsPanel, Panel):
         row = layout.row()
         row.label(text="Resolution:")
         row = layout.row(align=True)
+        row.active = not_osx or not gs.show_fullscreen
         row.prop(gs, "resolution_x", slider=False, text="X")
         row.prop(gs, "resolution_y", slider=False, text="Y")
         row = layout.row()
         col = row.column()
         col.prop(gs, "show_fullscreen")
-        col = row.column()
-        col.prop(gs, "use_desktop")
-        col.active = gs.show_fullscreen
+
+        if not_osx:
+            col = row.column()
+            col.prop(gs, "use_desktop")
+            col.active = gs.show_fullscreen
 
         col = layout.column()
         col.label(text="Quality:")