PLT-5135: Fix left channel in more channels list. (#5114)
PLT-5135: Fix left channel in more channels list. (#5114)

The problem was it was not being sorted, so appeared at the bottom of
the list.
rickbatka/mattermost-webapp,rickbatka/mattermost-webapp,rickbatka/mattermost-webapp,rickbatka/mattermost-webapp