[FIX] pos_loyalty: Fix loyalty points for new customer

Currently if a customer makes an order with a new loyalty card, the
Balance on the PartnerListScreen does not show the balance for the new
loyalty card
We need to refresh the page

Now, the Balance will show the new loyalty card balance without
refreshing the page

opw-3332436

closes odoo/odoo#122221

Signed-off-by: Heinz Robin (rhe) <rhe@odoo.com>

addons/pos_loyalty/static/src/js/PaymentScreen.js

@@ -132,6 +132,8 @@ export const PosLoyaltyPaymentScreen = (PaymentScreen) =>
                         } else {
                             dbCoupon = new PosLoyaltyCard(
                                 couponUpdate.code, couponUpdate.id, couponUpdate.program_id, couponUpdate.partner_id, couponUpdate.points);
+                            this.env.pos.partnerId2CouponIds[partner.id] = this.env.pos.partnerId2CouponIds[partner.id] || new Set();
+                            this.env.pos.partnerId2CouponIds[partner.id].add(couponUpdate.id);
                         }
                         delete this.env.pos.couponCache[couponUpdate.old_id];
                         this.env.pos.couponCache[couponUpdate.id] = dbCoupon;