ui improvements

lib/screens/transaction_controller.dart

@@ -15,6 +15,7 @@ class TransactionModel {
   BillProvider? selectedProvider;
   Map<String, dynamic>? receiptData;
   FormData formData = FormData(
+    id: '',
     type: '',
     billClientId: '',
     debitRef: '',
@@ -49,6 +50,7 @@ abstract class FormData with _$FormData {
   const factory FormData({
     required String type, // CONFIRM, REQUEST, REVERSE
     required String billClientId,
+    required String id,
     required String debitRef,
     required String debitCurrency,
     required String amount,