feat: Add mobile tabs for displaying and searching IPTV movies and series.

lib/mobile/features/iptv/widgets/mobile_series_tab.dart

@@ -93,12 +93,10 @@ class _MobileSeriesTabState extends ConsumerState<MobileSeriesTab> {
   }
 
   Future<void> _loadMoreSeries() async {
-    // Double-check conditions to prevent race conditions
+    // Prevent race conditions
     if (_isLoading || !_hasMore || !mounted) return;
 
-    // Set loading flag immediately before any async operation
-    _isLoading = true;
-    if (mounted) setState(() {});
+    setState(() => _isLoading = true);
 
     try {
       final service = ref.read(xtreamServiceProvider(widget.playlist));