fix bad meal voucher amount when mona payment exists

lacagette_addons/pos_meal_voucher/static/src/js/screens.js

@@ -335,6 +335,13 @@ odoo.define("pos_meal_voucher.screens", function (require) {
                 // update selected (last) payment line & order with meal voucher data
                 function update_order_meal_voucher_data(issuer = '') {
                     var total_eligible = order.get_total_meal_voucher_eligible();
+
+                    // Function defined in module "lacagette_mona", that may not be activated.
+                    // If said module is activated, consider this eligible amount.
+                    if (typeof order.get_total_meal_vouchers_eligible_including_mona === "function") {
+                        total_eligible = order.get_total_meal_vouchers_eligible_including_mona();
+                    }
+
                     var total_received = order.get_total_meal_voucher_received();
                     var max_amount = self.pos.config.max_meal_voucher_amount;
                     var current_max = total_eligible;