Unskip functional test

Author: kertal

test/functional/apps/discover/_discover.js

@@ -32,8 +32,7 @@ export default function ({ getService, getPageObjects }) {
     defaultIndex: 'logstash-*',
   };
 
-  // Failing: See https://github.com/elastic/kibana/issues/82915
-  describe.skip('discover test', function describeIndexTests() {
+  describe('discover test', function describeIndexTests() {
     before(async function () {
       log.debug('load kibana index with default index pattern');
       await esArchiver.load('discover');
@@ -315,8 +314,8 @@ export default function ({ getService, getPageObjects }) {
 
         const getRequestTimestamp = async () => {
           const requestStats = await inspector.getTableData();
-          const requestTimestamp = requestStats.filter((r) =>
-            r[0].includes('Request timestamp')
+          const requestTimestamp = requestStats.filter(
+            (r) => r && r[0] && r[0].includes('Request timestamp')
           )[0][1];
           return requestTimestamp;
         };