fix(firebase): prevent Firebase initialization in demo environment

- Remove WidgetsFlutterBinding.ensureInitialized() from bootstrap process
- Add condition to skip Firebase initialization in demo environment
- Update main.dart to reflect new initialization logic

Author: fulleni

lib/bootstrap.dart

@@ -67,7 +67,6 @@ Future<Widget> bootstrap(
     ..config('--- Starting Bootstrap Process ---')
     ..config('App Environment: $environment');
 
-  WidgetsFlutterBinding.ensureInitialized();
   Bloc.observer = const AppBlocObserver();
   timeago.setLocaleMessages('en', EnTimeagoMessages());
   timeago.setLocaleMessages('ar', ArTimeagoMessages());

lib/main.dart

@@ -25,10 +25,10 @@ Future<void> main() async {
   // Ensure Flutter widgets are initialized before any Firebase operations.
   WidgetsFlutterBinding.ensureInitialized();
 
-  // Initialize Firebase services only on non-web platforms.
+  // Initialize Firebase services only on non-web platforms and non-demo env.
   // Firebase is manually initialized using options from AppConfig,
   // removing the dependency on the auto-generated firebase_options.dart file.
-  if (!kIsWeb) {
+  if (!kIsWeb && !(appEnvironment == AppEnvironment.demo)) {
     await Firebase.initializeApp(
       options: FirebaseOptions(
         apiKey: appConfig.firebaseApiKey,