* [MM-53703] add displayname for experimental default channel (#24644) * [MM-53703] add unit test for default experimental channel (#24644) * Update server/channels/app/teams/teams_test.go --------- Co-authored-by: Sazzad Hossain <sazzad.hossain@marginedge.com> Co-authored-by: Mattermost Build <build@mattermost.com> Co-authored-by: Harrison Healey <harrisonmhealey@gmail.com>