fix(player): 路由覆盖时暂停播放

lib/app.dart

@@ -44,6 +44,7 @@ import 'core/data/services/locale_controller.dart';
 import 'core/data/services/playback_session.dart';
 import 'core/data/services/video_player_port.dart';
 import 'core/data/services/wallet_controller.dart';
+import 'core/navigation/app_route_observer.dart';
 import 'core/platform/haptics.dart';
 import 'core/theme/app_theme.dart';
 import 'core/theme/app_colors.dart';
@@ -266,6 +267,7 @@ class _LumaDramaAppState extends State<LumaDramaApp> {
           onGenerateTitle: (context) => AppLocalizations.of(context)!.appName,
           supportedLocales: AppLocalizations.supportedLocales,
           localizationsDelegates: AppLocalizations.localizationsDelegates,
+          navigatorObservers: [appRouteObserver],
           localeResolutionCallback: (deviceLocale, _) =>
               resolveAppLocale(deviceLocale),
           debugShowCheckedModeBanner: false,