fix: include invoice id in unremitted payments query

The invoice select was missing `id`, causing InvoiceSummary.fromJson
to crash on null — silently swallowing the error and showing an
empty unremitted list in the mobile app.

src/payment/payment.service.ts

@@ -169,7 +169,7 @@ export class PaymentService {
       where: { tenantId, collectedById: collectorId, id: { notIn: remittedIds.length > 0 ? remittedIds : ['none'] } },
       include: {
         client: { select: { firstName: true, lastName: true, accountNumber: true } },
-        invoice: { select: { number: true } },
+        invoice: { select: { id: true, number: true } },
       },
       orderBy: { createdAt: 'desc' },
     });