[FIX] pos_sale: runbot error 45368 (PosSettleOrderNotGroupable tour)

In this commit, we fix the last step of the PosSettleOrderNotGroupable tour
which is deterministically failing in runbot.

closes odoo/odoo#143229

Signed-off-by: Christophe Monniez (moc) <moc@odoo.com>

addons/point_of_sale/static/tests/tours/helpers/ProductScreenTourMethods.js

@@ -417,9 +417,9 @@ export function checkOrderlinesNumber(number) {
     return [
         {
             content: `check orderlines number`,
-            trigger: `.order .orderlines .orderline`,
+            trigger: `.order-container .orderline`,
             run: () => {
-                const orderline_amount = $('.order .orderlines .orderline').length;
+                const orderline_amount = $(".order-container .orderline").length;
                 if (orderline_amount !== number) {
                     throw new Error(`Expected ${number} orderlines, got ${orderline_amount}`);
                 }