[IMP] website_sale: product.product support website_publish_button

Now when you click on a variant and have the website_publisher right, you are
redirected to the correct variant.

If you don't have the access, you have the same behaviour than before and it
is the template that is unpublished. (strange!)

closes odoo/odoo#33175

Signed-off-by: Jérémy Kersten (jke) <jke@openerp.com>

addons/website_sale/models/product.py

@@ -441,7 +441,12 @@ class Product(models.Model):
     @api.multi
     def website_publish_button(self):
         self.ensure_one()
-        return self.product_tmpl_id.website_publish_button()
+        res = self.product_tmpl_id.website_publish_button()
+
+        # res can be the result of write() if not website_publisher
+        if type(res) == dict and res.get('type') == 'ir.actions.act_url':
+            res['url'] = self.website_url
+        return res
 
     @api.multi
     def _get_images(self):