feat: inject unified data migrations in dual writer (#114138)

* feat: draft changes for on-prem unified migration

* feat: further draft changes for on-prem unified migration

* fix: remove some tbis

* refactor: rename

* fix: another approach

* fix: background service related issues

* fix: address comments

* fix: make gen-go

* fix: background service related issues

* feat: refactor dual writer and legacy migrator

* fix: minor issues

* feat: working version in oss

* fix: wire

* fix: revert test data override

* fix: enterprise related issues

* chore: add todo

* fix: revert dual writer method

* fix: lint

* chore: logger format

* fix: reduce log level

* fix: log change

* fix: disable

* fix: address comments

* fix: return error on dual writer service

* fix: merge conflict

---------

Co-authored-by: Rafael Paulovic <rafael.paulovic@grafana.com>

pkg/registry/backgroundsvcs/background_services.go

@@ -48,7 +48,6 @@ import (
 	"github.com/grafana/grafana/pkg/services/supportbundles/supportbundlesimpl"
 	"github.com/grafana/grafana/pkg/services/team/teamapi"
 	"github.com/grafana/grafana/pkg/services/updatemanager"
-	unifiedmigrations "github.com/grafana/grafana/pkg/storage/unified/migrations"
 )
 
 func ProvideBackgroundServiceRegistry(
@@ -74,7 +73,6 @@ func ProvideBackgroundServiceRegistry(
 	dashboardServiceImpl *service.DashboardServiceImpl,
 	secretsGarbageCollectionWorker *secretsgarbagecollectionworker.Worker,
 	fixedRolesLoader *accesscontrol.FixedRolesLoader,
-	unifiedStorageMigrationProvider unifiedmigrations.UnifiedStorageMigrationProvider,
 	// Need to make sure these are initialized, is there a better place to put them?
 	_ dashboardsnapshots.Service,
 	_ serviceaccounts.Service,
@@ -91,7 +89,6 @@ func ProvideBackgroundServiceRegistry(
 		notifications,
 		rendering,
 		tokenService,
-		unifiedStorageMigrationProvider,
 		provisioning,
 		grafanaUpdateChecker,
 		pluginsUpdateChecker,