Channel index fix (#22947)

* WIP

* Fetched ES index for type checking

* WIP

* Moved migration key to model

* CI

* CI

* Fixed existing tests

* Updated einterface mocks

* CI

* WIP

* Reverted test makefile changes

* Fixed error level

* CI

* Not attempting to launch job if not enterprise ready

* CI

* Fixing job trigger condition

* CI

* Updated eemocks

* CI

server/channels/app/server.go

@@ -1476,6 +1476,11 @@ func (s *Server) initJobs() {
 		s.Jobs.RegisterJobType(model.JobTypeElasticsearchPostIndexing, builder.MakeWorker(), nil)
 	}
 
+	if jobsElasticsearchFixChannelIndexInterface != nil {
+		builder := jobsElasticsearchFixChannelIndexInterface(s)
+		s.Jobs.RegisterJobType(model.JobTypeElasticsearchFixChannelIndex, builder.MakeWorker(), nil)
+	}
+
 	if jobsLdapSyncInterface != nil {
 		builder := jobsLdapSyncInterface(New(ServerConnector(s.Channels())))
 		s.Jobs.RegisterJobType(model.JobTypeLdapSync, builder.MakeWorker(), builder.MakeScheduler())