UI sorting of LDAP subject search results from a "free form" search

University of Arizona's subject source is LDAP. When adding a member to a group in the UI, the "search on an entity" feature returns a list of CNs for people that don't appear to be in any particular sort order.

looking at the various properties in subject.properties and grouper-ui.properties, I don't see a way to specify a particular LDAP attribute that can be used for sorting this results of this search.

We use this for the free form search in subject.properties:
subjectApi.source.ldap.search.search.param.filter.value = (&(uid=%TERM%)(objectclass=person))