[FIX] point_of_sale: remove 0€ payment line of orders

Current behavior:
When an order contains a payment line with 0€, and a customer account
payment line. Then you close the PoS and invoice the order from an other
PoS session, you get an error.

Steps to reproduce:
- Open PoS, make a new order with a payment line of 0€ and a customer
  account payment line.
- Close the session and open a new one.
- Go in the paid order, and try to invoice it.
- You get an error.

Fix:
To fix the issue we just remove the useless 0€ payment line.

opw-3477486

closes odoo/odoo#134702

Signed-off-by: Joseph Caburnay (jcb) <jcb@odoo.com>

addons/point_of_sale/static/src/js/Screens/PaymentScreen/PaymentScreen.js

@@ -195,6 +195,11 @@ odoo.define('point_of_sale.PaymentScreen', function (require) {
             }
 
             this.currentOrder.initialize_validation_date();
+            for (let line of this.paymentLines) {
+                if (!line.amount === 0) {
+                     this.currentOrder.remove_paymentline(line);
+                }
+            }
             this.currentOrder.finalized = true;
 
             let syncOrderResult, hasError;