Folders: Allow folder editors and admins to create subfolders without any additional permissions (#91215)

* separate permissions for root level folder creation and subfolder creation

* fix tests

* fix tests

* fix tests

* frontend fix

* Update pkg/api/accesscontrol.go

Co-authored-by: Eric Leijonmarck <eric.leijonmarck@gmail.com>

* fix frontend when action sets are disabled

---------

Co-authored-by: Eric Leijonmarck <eric.leijonmarck@gmail.com>

pkg/services/ngalert/tests/util.go

@@ -98,6 +98,9 @@ func CreateTestAlertRuleWithLabels(t testing.TB, ctx context.Context, dbstore *s
 		OrgID:          orgID,
 		OrgRole:        org.RoleAdmin,
 		IsGrafanaAdmin: true,
+		Permissions: map[int64]map[string][]string{
+			orgID: {dashboards.ActionFoldersCreate: {dashboards.ScopeFoldersAll}},
+		},
 	}
 
 	ctx = identity.WithRequester(ctx, user)