Use exclusive_zone: -1 to not have panel impact position

Or need to make sure size is right, and it fills space other than panel?

src/main.rs

@@ -143,6 +143,7 @@ impl App {
         );
         get_layer_surface(SctkLayerSurfaceSettings {
             id,
+            exclusive_zone: -1,
             keyboard_interactivity: KeyboardInteractivity::Exclusive,
             namespace: "cosmic-workspace-overview".into(),
             layer: Layer::Overlay,