fixed quotation currency inference

frontend/pshared/lib/provider/payment/provider.dart

@@ -39,8 +39,7 @@ class PaymentProvider extends ChangeNotifier {
     String? clientPaymentRef,
     Map<String, String>? metadata,
   }) async {
-    if (!_organization.isOrganizationSet)
-      throw StateError('Organization is not set');
+    if (!_organization.isOrganizationSet) throw StateError('Organization is not set');
     final quoteRef = _quotation.quotation?.quoteRef;
     if (quoteRef == null || quoteRef.isEmpty) {
       throw StateError('Quotation reference is not set');

frontend/pshared/lib/provider/payment/quotation/intent_builder.dart

@@ -98,7 +98,7 @@ class QuotationIntentBuilder {
       }
       return FxIntent(
         pair: CurrencyPair(base: base, quote: quote),
-        side: FxSide.buyBaseSellQuote,
+        side: FxSide.sellBaseBuyQuote,
       );
     }