make sure gross is number

Author: vas3a

src/api/admin-winning/adminWinning.service.ts

@@ -107,7 +107,7 @@ export class AdminWinningService {
           details: item.payment?.map((paymentItem) => ({
             id: paymentItem.payment_id,
             netAmount: Number(paymentItem.net_amount),
-            grossAmount: (paymentItem.gross_amount),
+            grossAmount: Number(paymentItem.gross_amount),
             totalAmount: Number(paymentItem.total_amount),
             installmentNumber: paymentItem.installment_number,
             datePaid: paymentItem.date_paid ?? undefined,