fix: обновить вызов FToast с правильным API в Forui

finance_app/lib/screens/expenses_screen.dart

@@ -103,18 +103,16 @@ class _ExpensesScreenState extends State<ExpensesScreen> with TickerProviderStat
     try {
       await _controller.addSampleTransaction();
       if (mounted) {
-        FToast.show(
-          context: context,
+        FToast.of(context).show(
           title: const Text('Success'),
-          description: const Text('Transaction added successfully'),
+          subtitle: const Text('Transaction added successfully'),
         );
       }
     } catch (e) {
       if (mounted) {
-        FToast.show(
-          context: context,
+        FToast.of(context).show(
           title: const Text('Error'),
-          description: Text('Error adding transaction: $e'),
+          subtitle: Text('Error adding transaction: $e'),
           style: FToastStyle.destructive,
         );
       }