[FIX] pos_coupon: do not count refund orderlines when computing rewards

1. Sell Product A with discount because of Automatic Promo on specific
   product.
2. Refund Product A with its discount.
3. Add Product A in the refund order.
[BUG] No discount for the added Product A because the total
count of Product A in the order is 0 (or less because of the discount
line).

In this fix, we don't count the refund orderlines, this way, when
a product is added which qualifies the automatic promo, that new line
will be properly discounted.

Part-of: odoo/odoo#77903

addons/pos_coupon/static/src/js/coupon.js

@@ -297,11 +297,21 @@ odoo.define('pos_coupon.pos', function (require) {
          * rendered at the bottom of the orderlines list.
          */
         get_orderlines: function () {
-            return [...this._getRegularOrderlines(), ...this._getRewardLines()];
+            const orderlines = _order_super.get_orderlines.apply(this, arguments);
+            const rewardLines = [];
+            const nonRewardLines = [];
+            for (const line of orderlines) {
+                if (line.is_program_reward) {
+                    rewardLines.push(line);
+                } else {
+                    nonRewardLines.push(line);
+                }
+            }
+            return [...nonRewardLines, ...rewardLines];
         },
         _getRegularOrderlines: function () {
             const orderlines = _order_super.get_orderlines.apply(this, arguments);
-            return orderlines.filter((line) => !line.is_program_reward);
+            return orderlines.filter((line) => !line.is_program_reward && !line.refunded_orderline_id);
         },
         _getRewardLines: function () {
             const orderlines = _order_super.get_orderlines.apply(this, arguments);