[Discover] Fix flaky test for "allows editing of a newly created fiel…

…d" (#132812)

Co-authored-by: Kibana Machine <[email protected]>

test/functional/apps/discover/_runtime_fields_editor.ts

@@ -32,8 +32,7 @@ export default function ({ getService, getPageObjects }: FtrProviderContext) {
     await PageObjects.header.waitUntilLoadingHasFinished();
   };
 
-  // FLAKY: https://github.com/elastic/kibana/issues/123372
-  describe.skip('discover integration with runtime fields editor', function describeIndexTests() {
+  describe('discover integration with runtime fields editor', function describeIndexTests() {
     before(async function () {
       await security.testUser.setRoles(['kibana_admin', 'test_logstash_reader']);
       await esArchiver.loadIfNeeded('test/functional/fixtures/es_archiver/logstash_functional');
@@ -79,6 +78,7 @@ export default function ({ getService, getPageObjects }: FtrProviderContext) {
       await fieldEditor.save();
       await fieldEditor.confirmSave();
       await PageObjects.header.waitUntilLoadingHasFinished();
+      await PageObjects.discover.waitForDocTableLoadingComplete();
 
       await retry.waitForWithTimeout('fieldNames to include edits', 5000, async () => {
         const fieldNames = await PageObjects.discover.getAllFieldNames();