fix: Simplify notification settings and fix notification test on dashboard.

frontend/vite.config.ts

@@ -4,8 +4,5 @@ import { TanStackRouterVite } from "@tanstack/router-vite-plugin";
 
 // https://vite.dev/config/
 export default defineConfig({
-  plugins: [
-    TanStackRouterVite(),
-    react(),
-  ],
+  plugins: [TanStackRouterVite(), react()],
 });