fix functional bugs

lib/presentation/components/sheet/payment_method_sheet.dart

@@ -12,11 +12,13 @@ import '../../state/payment_method_sheet_state.dart';
 import '../../viewmodel/payment_method_sheet_bloc.dart';
 
 class PaymentMethodSheet extends StatefulWidget {
-  final PaymentCard? initialSelectedCard; // Добавляем это поле
+  final PaymentCard? initialSelectedCard;
+  final bool showBalance;
 
   const PaymentMethodSheet({
     super.key,
-    this.initialSelectedCard, // Инициализируем в конструкторе
+    this.initialSelectedCard,
+    this.showBalance = true,
   });
 
   @override
@@ -92,7 +94,7 @@ class _PaymentMethodSheetState extends State<PaymentMethodSheet> {
             _selectedPaymentMethod = initialIndex != -1 ? initialIndex : -1;
           } else {
             final mainCardIndex = state.cards.indexWhere((card) => card.isMain);
-            _selectedPaymentMethod = mainCardIndex != -1 ? mainCardIndex : -1;
+            _selectedPaymentMethod = mainCardIndex != -1 ? mainCardIndex : (widget.showBalance ? -1 : 0);
           }
         }
 
@@ -169,19 +171,20 @@ class _PaymentMethodSheetState extends State<PaymentMethodSheet> {
                         padding: const EdgeInsets.symmetric(horizontal: 20),
                         child: Column(
                           children: [
-                            PaymentOption(
-                              title: 'Баланс',
-                              subtitle: '${state.balance.toStringAsFixed(2)} BYN',
-                              isSelected: _selectedPaymentMethod == -1,
-                              onTap: () {
-                                setState(() {
-                                  _selectedPaymentMethod = -1;
-                                });
-                                Navigator.pop(context, 'balance');
-                              },
-                            ),
-
-                            const SizedBox(height: 12),
+                            if (widget.showBalance) ...[
+                              PaymentOption(
+                                title: 'Баланс',
+                                subtitle: '${state.balance.toStringAsFixed(2)} BYN',
+                                isSelected: _selectedPaymentMethod == -1,
+                                onTap: () {
+                                  setState(() {
+                                    _selectedPaymentMethod = -1;
+                                  });
+                                  Navigator.pop(context, 'balance');
+                                },
+                              ),
+                              const SizedBox(height: 12),
+                            ],
 
                             ...state.cards.asMap().entries.map((entry) {
                               final index = entry.key;