usability fixes

lib/screens/pay/pay_controller.g.dart

@@ -14,6 +14,7 @@ _PaymentProcessor _$PaymentProcessorFromJson(Map<String, dynamic> json) =>
       accountFieldName: json['accountFieldName'] as String,
       accountFieldLabel: json['accountFieldLabel'] as String,
       label: json['label'] as String,
+      currency: json['currency'] as String,
       authType: json['authType'] as String,
     );
 
@@ -25,6 +26,7 @@ Map<String, dynamic> _$PaymentProcessorToJson(_PaymentProcessor instance) =>
       'accountFieldName': instance.accountFieldName,
       'accountFieldLabel': instance.accountFieldLabel,
       'label': instance.label,
+      'currency': instance.currency,
       'authType': instance.authType,
     };