Nested Folders: Support getting of nested folder in folder service wh… (#58597)

* Nested Folders: Support getting of nested folder in folder service when feature flag is set

* Fix lint

* Fix some tests

* Fix ngalert test

* ngalert fix

* Fix API tests

* Fix some tests and lint

* Fix lint 2

* Fix library elements and panels

* Add access control to get folder

* Cleanup and minor test change

pkg/services/ngalert/ngalert_test.go

@@ -13,7 +13,7 @@ import (
 	"github.com/grafana/grafana/pkg/events"
 	"github.com/grafana/grafana/pkg/infra/log"
 	"github.com/grafana/grafana/pkg/infra/tracing"
-	models2 "github.com/grafana/grafana/pkg/models"
+	"github.com/grafana/grafana/pkg/services/folder"
 	"github.com/grafana/grafana/pkg/services/ngalert/models"
 	"github.com/grafana/grafana/pkg/services/ngalert/schedule"
 	"github.com/grafana/grafana/pkg/services/ngalert/tests/fakes"
@@ -22,9 +22,9 @@ import (
 
 func Test_subscribeToFolderChanges(t *testing.T) {
 	orgID := rand.Int63()
-	folder := &models2.Folder{
-		Id:    0,
-		Uid:   util.GenerateShortUID(),
+	folder := &folder.Folder{
+		ID:    0,
+		UID:   util.GenerateShortUID(),
 		Title: "Folder" + util.GenerateShortUID(),
 	}
 	rules := models.GenerateAlertRules(5, models.AlertRuleGen(models.WithOrgID(orgID), models.WithNamespace(folder)))
@@ -42,8 +42,8 @@ func Test_subscribeToFolderChanges(t *testing.T) {
 	err := bus.Publish(context.Background(), &events.FolderTitleUpdated{
 		Timestamp: time.Now(),
 		Title:     "Folder" + util.GenerateShortUID(),
-		ID:        folder.Id,
-		UID:       folder.Uid,
+		ID:        folder.ID,
+		UID:       folder.UID,
 		OrgID:     orgID,
 	})
 	require.NoError(t, err)