Remove palette re-render on state change

Remove the on(EVENTS.STATE_CHANGED) handler that called renderWidgetPalette('widgetPalette') from frontend/js/main.js. This avoids redundant palette re-renders on state updates (palette rendering is handled elsewhere) and reduces unnecessary DOM updates.

Author: koosoli

custom_components/esphome_designer/frontend/js/main.js

@@ -269,10 +269,6 @@ export class App {
                 }, SAVE_DEBOUNCE_MS);
             });
 
-            // Re-render palette when mode might have changed
-            on(EVENTS.STATE_CHANGED, () => {
-                renderWidgetPalette('widgetPalette');
-            });
         });
     }