fix logstash central pipeline management test (#83281)

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

Author: kaisecheng

x-pack/test/functional/apps/logstash/pipeline_create.js

@@ -5,6 +5,7 @@
  */
 
 import expect from '@kbn/expect';
+import { omit } from 'lodash';
 
 export default function ({ getService, getPageObjects }) {
   const browser = getService('browser');
@@ -15,8 +16,7 @@ export default function ({ getService, getPageObjects }) {
   const PageObjects = getPageObjects(['logstash']);
   const retry = getService('retry');
 
-  // FLAKY: https://github.com/elastic/kibana/issues/83231
-  describe.skip('pipeline create new', () => {
+  describe('pipeline create new', () => {
     let originalWindowSize;
 
     before(async () => {
@@ -89,14 +89,16 @@ export default function ({ getService, getPageObjects }) {
         await PageObjects.logstash.gotoPipelineList();
         await pipelineList.assertExists();
         const originalRows = await pipelineList.readRows();
+        const originalRowsWithoutTime = originalRows.map((row) => omit(row, 'lastModified'));
 
         await PageObjects.logstash.gotoNewPipelineEditor();
         await pipelineEditor.clickCancel();
 
         await retry.try(async () => {
           await pipelineList.assertExists();
           const currentRows = await pipelineList.readRows();
-          expect(originalRows).to.eql(currentRows);
+          const currentRowsWithoutTime = currentRows.map((row) => omit(row, 'lastModified'));
+          expect(originalRowsWithoutTime).to.eql(currentRowsWithoutTime);
         });
       });
     });