[IMP] website_sale_aplicoop: respect allow_out_of_stock_order

Added website_sale_stock dependency and modified _compute_stock_ribbons
to respect the allow_out_of_stock_order field:
- If allow_out_of_stock_order=True: product can always be added to cart
- If allow_out_of_stock_order=False and qty<=0: add-to-cart is blocked

The JS logic already checks data-out-of-stock attribute from template,
so no frontend changes were needed.

Version bump: 18.0.1.7.0 -> 18.0.1.8.0

website_sale_aplicoop/__manifest__.py

@@ -3,7 +3,7 @@
 
 {  # noqa: B018
     "name": "Website Sale - Aplicoop",
-    "version": "18.0.1.7.0",
+    "version": "18.0.1.8.0",
     "category": "Website/Sale",
     "summary": "Modern replacement of legacy Aplicoop - Collaborative consumption group orders",
     "author": "Odoo Community Association (OCA), Criptomart",
@@ -12,6 +12,7 @@
     "license": "AGPL-3",
     "depends": [
         "website_sale",
+        "website_sale_stock",
         "product",
         "sale",
         "stock",