[content] Images & Assets tree views configuration is missing nodetypes in frontend:properties

The property fronted:properties on nodes /hippo:configuration/hippo:frontend/cms/cms-tree-views/assets and /hippo:configuration/hippo:frontend/cms/cms-tree-views/images is missing the value nodetypes which prevents the cluster configuration nodes at /hippo:configuration/hippo:frontend/cms/cms-browser/imagesTreeLoader/cluster.config and /hippo:configuration/hippo:frontend/cms/cms-browser/assetsTreeLoader/cluster.config to add nodetype filtering. (This is correct for documents and also documented as such).