[FIX] website_sale, website_sale_stock: fix deps

Commit d25719cd use in website_sale the field sale_delay defined in stock and
so only available with the module bridge website_sale_stock only.

After this commit, website_sale without stock works again.

This commit closes #26855, closes #24671

addons/website_sale/models/sale_order.py

@@ -105,7 +105,6 @@ class SaleOrder(models.Model):
             'order_id': order_id,
             'product_uom': product.uom_id.id,
             'price_unit': pu,
-            'customer_lead': product.sale_delay,
         }
 
     @api.multi

addons/website_sale_stock/models/sale_order.py

@@ -31,6 +31,13 @@ class SaleOrder(models.Model):
                         values['warning'] = self.warning_stock
         return values
 
+    @api.multi
+    def _website_product_id_change(self, order_id, product_id, qty=0):
+        res = super(SaleOrder, self)._website_product_id_change(order_id, product_id, qty=qty)
+        product = self.env['product.product'].browse(product_id)
+        res['customer_lead'] = product.sale_delay
+        return res
+
     @api.multi
     def _get_stock_warning(self, clear=True):
         self.ensure_one()