perf: Skip nc:realpath property in custom properties

Signed-off-by: Julius Knorr <jus@bitgrid.net>

Author: juliusknorr

apps/dav/lib/DAV/CustomPropertiesBackend.php

@@ -92,6 +92,8 @@ class CustomPropertiesBackend implements BackendInterface {
 		'{http://nextcloud.org/ns}lock-time',
 		'{http://nextcloud.org/ns}lock-timeout',
 		'{http://nextcloud.org/ns}lock-token',
+		// photos
+		'{http://nextcloud.org/ns}realpath',
 	];
 
 	/**