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/einterfaces/jobs/elasticsearch.go

@@ -15,3 +15,7 @@ type ElasticsearchAggregatorInterface interface {
 	MakeWorker() model.Worker
 	MakeScheduler() model.Scheduler
 }
+
+type ElasticsearchFixChannelIndexInterface interface {
+	MakeWorker() model.Worker
+}

server/channels/einterfaces/mocks/ElasticsearchFixChannelIndexInterface.go

@@ -0,0 +1,46 @@
+// Code generated by mockery v2.23.2. DO NOT EDIT.
+
+// Regenerate this file using `make einterfaces-mocks`.
+
+package mocks
+
+import (
+	model "github.com/mattermost/mattermost-server/server/v8/model"
+	mock "github.com/stretchr/testify/mock"
+)
+
+// ElasticsearchFixChannelIndexInterface is an autogenerated mock type for the ElasticsearchFixChannelIndexInterface type
+type ElasticsearchFixChannelIndexInterface struct {
+	mock.Mock
+}
+
+// MakeWorker provides a mock function with given fields:
+func (_m *ElasticsearchFixChannelIndexInterface) MakeWorker() model.Worker {
+	ret := _m.Called()
+
+	var r0 model.Worker
+	if rf, ok := ret.Get(0).(func() model.Worker); ok {
+		r0 = rf()
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(model.Worker)
+		}
+	}
+
+	return r0
+}
+
+type mockConstructorTestingTNewElasticsearchFixChannelIndexInterface interface {
+	mock.TestingT
+	Cleanup(func())
+}
+
+// NewElasticsearchFixChannelIndexInterface creates a new instance of ElasticsearchFixChannelIndexInterface. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
+func NewElasticsearchFixChannelIndexInterface(t mockConstructorTestingTNewElasticsearchFixChannelIndexInterface) *ElasticsearchFixChannelIndexInterface {
+	mock := &ElasticsearchFixChannelIndexInterface{}
+	mock.Mock.Test(t)
+
+	t.Cleanup(func() { mock.AssertExpectations(t) })
+
+	return mock
+}