load empty_kibana in test to have clean starting point (#82772)

Co-authored-by: Kibana Machine <42973632+kibanamachine@users.noreply.github.com>

test/functional/apps/management/_mgmt_import_saved_objects.js

@@ -29,6 +29,7 @@ export default function ({ getService, getPageObjects }) {
 
   describe('mgmt saved objects', function describeIndexTests() {
     beforeEach(async function () {
+      await esArchiver.load('empty_kibana');
       await esArchiver.load('discover');
       await PageObjects.settings.navigateTo();
     });