XF\Repository\AbstractField::getFieldCacheData attempts to order by display_group

[XFFA.IR Bot]

... even if the display_group field does not exist in the entity structure:
PHP:

        if (empty($this->em->getEntityStructure($this->getClassIdentifier())->columns['display_group']))
        {
            $finder->order(['display_group', 'display_order']);
        }
        else
        {
            $finder->order('display_order');
        }