added ledger as souec of funds for payouts

frontend/pweb/lib/pages/dashboard/payouts/summary/fee.dart

@@ -14,10 +14,15 @@ class PaymentFeeRow extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) => Consumer<QuotationProvider>(
-    builder: (context, provider, _) => PaymentSummaryRow(
-      labelFactory: AppLocalizations.of(context)!.fee,
-      asset: provider.fee,
-      style: Theme.of(context).textTheme.titleMedium,
-    ),
+    builder: (context, provider, _) {
+      final fee = provider.fee;
+      final l10 = AppLocalizations.of(context)!;
+      return PaymentSummaryRow(
+        labelFactory: l10.fee,
+        asset: fee,
+        value: fee == null ? l10.noFee : null,
+        style: Theme.of(context).textTheme.titleMedium,
+      );
+    },
   );
 }