add short sleep before clicking Remove on sample data (elastic#71104)

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

test/functional/page_objects/home_page.ts

@@ -54,6 +54,10 @@ export function HomePageProvider({ getService, getPageObjects }: FtrProviderCont
     async removeSampleDataSet(id: string) {
       // looks like overkill but we're hitting flaky cases where we click but it doesn't remove
       await testSubjects.waitForEnabled(`removeSampleDataSet${id}`);
+      // https://github.com/elastic/kibana/issues/65949
+      // Even after waiting for the "Remove" button to be enabled we still have failures
+      // where it appears the click just didn't work.
+      await PageObjects.common.sleep(1010);
       await testSubjects.click(`removeSampleDataSet${id}`);
       await this._waitForSampleDataLoadingAction(id);
     }