[FIX] point_of_sale: prevent adding not saleable product with scan

Current behavior:
When scanning the barcode of a product that is not saleable, the product
was added to the order.

Steps to reproduce:
- Create a product that is not saleable and not available in PoS
- Set a barcode for this product
- Open the PoS, and scan the barcode of the product
- The product is added to the order even if it is not saleable

opw-3325238

closes odoo/odoo#126293

X-original-commit: 3a3997e22b6a21c66455718a117c7c424526745e
Signed-off-by: Joseph Caburnay (jcb) <jcb@odoo.com>
Signed-off-by: Robin Engels (roen) <roen@odoo.com>

addons/point_of_sale/static/src/app/screens/product_screen/product_screen.js

@@ -140,6 +140,7 @@ export class ProductScreen extends ControlButtonsMixin(Component) {
             let foundProductIds = [];
             foundProductIds = await this.orm.search("product.product", [
                 ["barcode", "=", code.base_code],
+                ["sale_ok", "=", true],
             ]);
             if (foundProductIds.length) {
                 await this.pos._addProducts(foundProductIds);