[FIX] website_sale, website_sale_stock: prevent out of stock

Steps to reproduce:
- create a product;
- disable the continue selling option for the out-of-stock;
- do not have a stock quantity for this product.
- go to ecommerce;
- without click on the product, add it in the cart with the cart icon (on the picture).

Issue:
It is possible to add the product to the cart.
If we repeat this several times, we will create quotations.

Solution:
Hide the button if the product is a storable product
and we don't want to sell it if we have no stock.
We also check the quantity available.

opw-3148069

closes odoo/odoo#120176

X-original-commit: bf4b5962c396101f242822058b5ddf815408e3f8
Signed-off-by: Antoine Vandevenne (anv) <anv@odoo.com>
Signed-off-by: Lefebvre Thomas (thle) <thle@odoo.com>

addons/website_sale_stock/models/product_product.py

@@ -30,6 +30,9 @@ class ProductProduct(models.Model):
         combination_info = self.with_context(website_sale_stock_get_quantity=True).product_tmpl_id._get_combination_info(product_id=self.id)
         return combination_info['product_type'] == 'product' and combination_info['free_qty'] <= 0
 
+    def _website_show_quick_add(self):
+        return (self.allow_out_of_stock_order or not self._is_sold_out()) and super()._website_show_quick_add()
+
     def _send_availability_email(self):
         for product in self.search([('stock_notification_partner_ids', '!=', False)]):
             if product._is_sold_out():

addons/website_sale_stock/models/product_template.py

@@ -59,3 +59,6 @@ class ProductTemplate(models.Model):
 
     def _is_sold_out(self):
         return self.product_variant_id._is_sold_out()
+
+    def _website_show_quick_add(self):
+        return (self.allow_out_of_stock_order or not self._is_sold_out()) and super()._website_show_quick_add()