[FIX] pos_sale: fix test and traceback when pos_loyalty is not installed

Current behavior:
When pos_loyalty is not installed,the
`test_settle_order_with_promotions` was failing. Also if the user tries
to settle an order he would get a traceback.

The issue was introduced here: https://github.com/odoo/odoo/pull/119673



opw-3247545

closes odoo/odoo#121603

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

addons/pos_sale/static/src/js/OrderManagementScreen/SaleOrderManagementScreen.js

@@ -293,7 +293,7 @@ odoo.define('pos_sale.SaleOrderManagementScreen', function (require) {
             sale_order[0].amount_unpaid = saleOrdersAmountUnpaid[sale_order[0].id];
 
             const sale_lines = await this._getSOLines(sale_order[0].order_line);
-            const promo_products_to_remove = this.env.pos.promo_programs.flatMap(program => program.promo_code_usage === 'no_code_needed' ? program.discount_line_product_id[0] : []);
+            const promo_products_to_remove = this.env.pos.promo_programs ? this.env.pos.promo_programs.flatMap(program => program.promo_code_usage === 'no_code_needed' ? program.discount_line_product_id[0] : []) : [];
             sale_order[0].order_line = sale_lines.filter(line => !promo_products_to_remove.includes(line.product_id[0]));
 
             return sale_order[0];

addons/pos_sale/tests/test_pos_sale_flow.py

@@ -121,6 +121,11 @@ class TestPoSSale(TestPointOfSaleHttpCommon):
         self.assertEqual(orderline_product_b.move_ids.product_uom_qty, 1)
 
     def test_settle_order_with_promotions(self):
+        if not self.env["ir.module.module"].search([("name", "=", "pos_coupon"), ("state", "=", "installed")]):
+            self.skipTest("pos_coupon module is required for this test")
+        if not self.env["ir.module.module"].search([("name", "=", "sale_coupon"), ("state", "=", "installed")]):
+            self.skipTest("sale_coupon module is required for this test")
+
         self.promotion_program = self.env['coupon.program'].create({
             'name': '50% on current order',
             'program_type': 'promotion_program',