feat(localization): add UiKitLocalizations to localizationsDelegates

- Add UiKitLocalizations.localizationsDelegates to the existing AppLocalizations.localizationsDelegates for dark mode toggle buttons in iOS.
- Implemented in three MaterialApp widgets within the _AppViewState class.

Author: fulleni

lib/app/view/app.dart

@@ -238,7 +238,10 @@ class _AppViewState extends State<_AppView> {
                 fontFamily: null,
               ),
               themeMode: state.themeMode,
-              localizationsDelegates: AppLocalizations.localizationsDelegates,
+              localizationsDelegates: const [
+                ...AppLocalizations.localizationsDelegates,
+                ...UiKitLocalizations.localizationsDelegates,
+              ],
               supportedLocales: AppLocalizations.supportedLocales,
               locale: state.locale,
               home: const MaintenancePage(),
@@ -262,7 +265,10 @@ class _AppViewState extends State<_AppView> {
                 fontFamily: null,
               ),
               themeMode: state.themeMode,
-              localizationsDelegates: AppLocalizations.localizationsDelegates,
+              localizationsDelegates: const [
+                ...AppLocalizations.localizationsDelegates,
+                ...UiKitLocalizations.localizationsDelegates,
+              ],
               supportedLocales: AppLocalizations.supportedLocales,
               locale: state.locale,
               home: const UpdateRequiredPage(),
@@ -289,7 +295,10 @@ class _AppViewState extends State<_AppView> {
                 fontFamily: null,
               ),
               themeMode: state.themeMode,
-              localizationsDelegates: AppLocalizations.localizationsDelegates,
+              localizationsDelegates: const [
+                ...AppLocalizations.localizationsDelegates,
+                ...UiKitLocalizations.localizationsDelegates,
+              ],
               supportedLocales: AppLocalizations.supportedLocales,
               locale: state.locale,
               home: const StatusPage(),