feat: introduce Live TV tab for browsing IPTV channels with category filtering, search, and favorites.

lib/features/iptv/screens/player_screen.dart

@@ -188,8 +188,8 @@ class _PlayerScreenState extends ConsumerState<PlayerScreen> {
             ..style.border = 'none'
             ..style.width = '100%'
             ..style.height = '100%'
-            ..allow = 'autoplay; fullscreen'
-            ..allowFullscreen = true;
+            ..style.height = '100%'
+            ..allow = 'autoplay; fullscreen; picture-in-picture';
           return iframe;
         },
       );