Fix now playing bar rendering under drawer

src/apps/experimental/AppOverrides.scss

@@ -10,11 +10,6 @@ $mui-bp-xl: 1536px;
     position: relative;
 }
 
-// Ensure the footer renders over the drawer
-.appfooter {
-    z-index: 1201 !important; // mui drawer uses z-index 1200
-}
-
 // Hide some items from the user "settings" page that are in the drawer
 #myPreferencesMenuPage {
     .lnkQuickConnectPreferences,

src/components/appFooter/appFooter.scss

@@ -2,7 +2,7 @@
     position: fixed;
     left: 0;
     right: 0;
-    z-index: 10;
+    z-index: 1201 !important; // mui drawer uses z-index 1200
     bottom: 0;
     transition: transform 180ms linear;
     contain: layout style;