[Discover] Unskip edit data view test (elastic#176134)

- Closes elastic#174066

## Summary

50x
https://buildkite.com/elastic/kibana-flaky-test-suite-runner/builds/5022


### Checklist

- [x] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios
- [x] [Flaky Test
Runner](https://ci-stats.kibana.dev/trigger_flaky_test_runner/1) was
used on any tests changed

test/functional/apps/management/data_views/_data_view_create_delete.ts

@@ -149,8 +149,7 @@ export default function ({ getService, getPageObjects }: FtrProviderContext) {
       });
     });
 
-    // FLAKY: https://github.com/elastic/kibana/issues/174066
-    describe.skip('edit index pattern', () => {
+    describe('edit index pattern', () => {
       it('on edit click', async () => {
         await PageObjects.settings.editIndexPattern('logstash-*', '@timestamp', 'Logstash Star');
 

test/functional/page_objects/settings_page.ts

@@ -238,6 +238,9 @@ export class SettingsPageObject extends FtrService {
 
   async clickEditIndexButton() {
     await this.testSubjects.click('editIndexPatternButton');
+    await this.retry.waitFor('flyout', async () => {
+      return await this.testSubjects.exists('indexPatternEditorFlyout');
+    });
   }
 
   async clickDeletePattern() {