controlcenter: corrected missing config.save() on panes

modules/controlcenter/launcher/LauncherPane.qml

@@ -66,8 +66,11 @@ RowLayout {
             }
         }
 
-        // Update Config to trigger save
+        // Update Config
         Config.launcher.hiddenApps = hiddenApps;
+
+        // Persist changes to disk
+        Config.save();
     }
 
     onSelectedAppChanged: {

modules/controlcenter/taskbar/TaskbarPane.qml

@@ -111,6 +111,9 @@ RowLayout {
             });
         }
         Config.bar.entries = entries;
+
+        // Persist changes to disk
+        Config.save();
     }
 
     ListModel {