[7.x] logout from transform_poweruser user in after method of transfo…

…rm tests (elastic#70644) (elastic#70738)

Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>

Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>

x-pack/test/functional/apps/transform/index.ts

@@ -5,9 +5,10 @@
  */
 import { FtrProviderContext } from '../../ftr_provider_context';
 
-export default function ({ getService, loadTestFile }: FtrProviderContext) {
+export default function ({ getService, loadTestFile, getPageObjects }: FtrProviderContext) {
   const esArchiver = getService('esArchiver');
   const transform = getService('transform');
+  const PageObjects = getPageObjects(['security']);
 
   describe('transform', function () {
     this.tags(['ciGroup9', 'transform']);
@@ -30,6 +31,7 @@ export default function ({ getService, loadTestFile }: FtrProviderContext) {
       await esArchiver.unload('ml/ecommerce');
 
       await transform.testResources.resetKibanaTimeZone();
+      await PageObjects.security.logout();
     });
 
     loadTestFile(require.resolve('./creation_index_pattern'));