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/testlib/store.go

@@ -72,6 +72,7 @@ func GetMockStoreForSetupFunctions() *mocks.Store {
 	systemStore.On("GetByName", model.MigrationKeyAddCustomUserGroupsPermissionRestore).Return(&model.System{Name: model.MigrationKeyAddCustomUserGroupsPermissionRestore, Value: "true"}, nil)
 	systemStore.On("GetByName", "CustomGroupAdminRoleCreationMigrationComplete").Return(&model.System{Name: model.MigrationKeyAddPlayboosksManageRolesPermissions, Value: "true"}, nil)
 	systemStore.On("GetByName", "products_boards").Return(&model.System{Name: "products_boards", Value: "true"}, nil)
+	systemStore.On("GetByName", "elasticsearch_fix_channel_index_migration_complete").Return(&model.System{Name: "elasticsearch_fix_channel_index_migration_complete", Value: "true"}, nil)
 	systemStore.On("InsertIfExists", mock.AnythingOfType("*model.System")).Return(&model.System{}, nil).Once()
 	systemStore.On("Save", mock.AnythingOfType("*model.System")).Return(nil)