[FIX] website: check website_published exists before use

closes odoo/odoo#56786

X-original-commit: d23899b3c4ea91e4ac80163764c97cb9591d889c
Signed-off-by: Jérémy Kersten (jke) <jke@openerp.com>

addons/website/controllers/main.py

@@ -386,8 +386,9 @@ class Website(Home):
         values = {}
         if 'website_published' in Model._fields:
             values['website_published'] = not record.website_published
-        record.write(values)
-        return bool(record.website_published)
+            record.write(values)
+            return bool(record.website_published)
+        return False
 
     @http.route(['/website/seo_suggest'], type='json', auth="user", website=True)
     def seo_suggest(self, keywords=None, lang=None):