[8.9] [TSVB] Stabilize the functional test (#160847) (#160878)

# Backport

This will backport the following commits from `main` to `8.9`:
- [[TSVB] Stabilize the functional test
(#160847)](#160847)

<!--- Backport version: 8.9.7 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sqren/backport)

<!--BACKPORT [{"author":{"name":"Stratoula
Kalafateli","email":"[email protected]"},"sourceCommit":{"committedDate":"2023-06-29T12:17:27Z","message":"[TSVB]
Stabilize the functional test (#160847)\n\n## Summary\r\n\r\nCloses
https://github.com/elastic/kibana/issues/158972\r\n\r\nI think this
change is going to stabilize this test once and for all.\r\n\r\nRunner
100times\r\nhttps://buildkite.com/elastic/kibana-flaky-test-suite-runner/builds/2532","sha":"5f5d5525c4dd64d58bcf5fc67c2469bccf7a4f70","branchLabelMapping":{"^v8.10.0$":"main","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["Feature:TSVB","Team:Visualizations","release_note:skip","backport:prev-minor","v8.9.0","v8.10.0"],"number":160847,"url":"https://github.com/elastic/kibana/pull/160847","mergeCommit":{"message":"[TSVB]
Stabilize the functional test (#160847)\n\n## Summary\r\n\r\nCloses
https://github.com/elastic/kibana/issues/158972\r\n\r\nI think this
change is going to stabilize this test once and for all.\r\n\r\nRunner
100times\r\nhttps://buildkite.com/elastic/kibana-flaky-test-suite-runner/builds/2532","sha":"5f5d5525c4dd64d58bcf5fc67c2469bccf7a4f70"}},"sourceBranch":"main","suggestedTargetBranches":["8.9"],"targetPullRequestStates":[{"branch":"8.9","label":"v8.9.0","labelRegex":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"},{"branch":"main","label":"v8.10.0","labelRegex":"^v8.10.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/160847","number":160847,"mergeCommit":{"message":"[TSVB]
Stabilize the functional test (#160847)\n\n## Summary\r\n\r\nCloses
https://github.com/elastic/kibana/issues/158972\r\n\r\nI think this
change is going to stabilize this test once and for all.\r\n\r\nRunner
100times\r\nhttps://buildkite.com/elastic/kibana-flaky-test-suite-runner/builds/2532","sha":"5f5d5525c4dd64d58bcf5fc67c2469bccf7a4f70"}}]}]
BACKPORT-->

Co-authored-by: Stratoula Kalafateli <[email protected]>

test/functional/apps/visualize/group5/_tsvb_time_series.ts

@@ -11,14 +11,16 @@ import expect from '@kbn/expect';
 import { FtrProviderContext } from '../../../ftr_provider_context';
 
 export default function ({ getPageObjects, getService }: FtrProviderContext) {
-  const { visualize, visualBuilder, timeToVisualize, dashboard, header, common } = getPageObjects([
-    'visualBuilder',
-    'visualize',
-    'timeToVisualize',
-    'dashboard',
-    'header',
-    'common',
-  ]);
+  const { visualize, visualBuilder, timeToVisualize, dashboard, header, common, visChart } =
+    getPageObjects([
+      'visualBuilder',
+      'visualize',
+      'timeToVisualize',
+      'dashboard',
+      'header',
+      'common',
+      'visChart',
+    ]);
   const security = getService('security');
   const testSubjects = getService('testSubjects');
   const retry = getService('retry');
@@ -28,8 +30,7 @@ export default function ({ getPageObjects, getService }: FtrProviderContext) {
   const browser = getService('browser');
   const kibanaServer = getService('kibanaServer');
 
-  // Failing: See https://github.com/elastic/kibana/issues/158972
-  describe.skip('visual builder', function describeIndexTests() {
+  describe('visual builder', function describeIndexTests() {
     before(async () => {
       await security.testUser.setRoles([
         'kibana_admin',
@@ -223,11 +224,14 @@ export default function ({ getPageObjects, getService }: FtrProviderContext) {
           it('should create a filter for series with multiple split by terms fields one of which has formatting', async () => {
             const expectedFilterPills = ['0, win 7'];
             await visualBuilder.setMetricsGroupByTerms('bytes');
+            await visChart.waitForVisualizationRenderingStabilized();
             await header.waitUntilLoadingHasFinished();
             await visualBuilder.setAnotherGroupByTermsField('machine.os.raw');
+            await visChart.waitForVisualizationRenderingStabilized();
             await header.waitUntilLoadingHasFinished();
             await visualBuilder.clickSeriesOption();
             await visualBuilder.setChartType('Bar');
+            await visChart.waitForVisualizationRenderingStabilized();
             await header.waitUntilLoadingHasFinished();
             await visualBuilder.clickPanelOptions('timeSeries');
             await visualBuilder.setIntervalValue('1w');