perf: block more properties from using the custom properties backend

Signed-off-by: Robin Appelman <robin@icewind.nl>

Author: icewind1991

apps/dav/lib/DAV/CustomPropertiesBackend.php

@@ -74,6 +74,10 @@ class CustomPropertiesBackend implements BackendInterface {
 		'{DAV:}getetag',
 		'{DAV:}quota-used-bytes',
 		'{DAV:}quota-available-bytes',
+		'{DAV:}getlastmodified',
+		'{DAV:}creationdate',
+		'{DAV:}displayname',
+		'{http://open-collaboration-services.org/ns}share-permissions',
 	];
 
 	/**