Hide Clean UI from the Visual panel in cockpit

Cockpit's Visual panel now also leaves out the Clean UI toggle, as it
does the celestial ring.

Co-authored-by: Sameh Khamis <[email protected]>

src/ui/styles/cockpit-panels.css

@@ -162,7 +162,8 @@ body.cockpit-mode
 /* In cockpit, Visual keeps only what the cockpit's own Display panel does
    not already offer: the HUD, detection, parameters and 3D-model groups live
    there (its portal moves them while it shows; hidden here otherwise, so they
-   never appear twice), and the celestial ring has no place in first person. */
+   never appear twice), and the celestial ring and Clean UI have no place in
+   first person. */
 body.cockpit-mode
   #pp-toggles
   :is(
@@ -170,6 +171,7 @@ body.cockpit-mode
     .pp-toggle-group:has(#detection-toggle),
     .pp-toggle-group:has(#models3d-toggle),
     .pp-toggle-group:has(#celestial-toggle),
+    #clean-view-toggle,
     #param-slider-panel
   ) {
   display: none !important;