graph: Add accountEnabled flag to ldap backend. (#5588)

* graph: Add accountEnabled flag to ldap backend.

* Add missing accountEnabled attribute to user listing.

services/graph/pkg/config/defaults/defaultconfig.go

@@ -68,6 +68,7 @@ func DefaultConfig() *config.Config {
 				// FIXME: switch this to some more widely available attribute by default
 				//        ideally this needs to	be constant for the lifetime of a users
 				UserIDAttribute:           "owncloudUUID",
+				UserEnabledAttribute:      "ownCloudUserEnabled",
 				GroupBaseDN:               "ou=groups,o=libregraph-idm",
 				GroupSearchScope:          "sub",
 				GroupFilter:               "",