[8.x] Fixes Failing test: Jest Integration Tests.x-pack/platform/plug…

…ins/shared/task_manager/server/integration_tests - unrecognized task types should be no workload aggregator errors when there are removed task types (#210399) (#210843)

# Backport

This will backport the following commits from `main` to `8.x`:
- [Fixes Failing test: Jest Integration
Tests.x-pack/platform/plugins/shared/task_manager/server/integration_tests
- unrecognized task types should be no workload aggregator errors when
there are removed task types
(#210399)](#210399)

<!--- Backport version: 9.4.3 -->

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

<!--BACKPORT [{"author":{"name":"Ying
Mao","email":"ying.mao@elastic.co"},"sourceCommit":{"committedDate":"2025-02-12T14:30:38Z","message":"Fixes
Failing test: Jest Integration
Tests.x-pack/platform/plugins/shared/task_manager/server/integration_tests
- unrecognized task types should be no workload aggregator errors when
there are removed task types (#210399)\n\nResolves
https://github.com/elastic/kibana/issues/208459\r\n\r\n##
Summary\r\n\r\nThe fix added in
this\r\n[PR](#206598) to call
the\r\n`mark_removed_tasks_as_unrecognized` tasks sometimes throws an
error if\r\nthe task is in the middle of running. This PR adds a
try/catch and a\r\nretry to the `runSoon`
call.\r\n\r\n---------\r\n\r\nCo-authored-by: Elastic Machine
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Failing test: Jest Integration
Tests.x-pack/platform/plugins/shared/task_manager/server/integration_tests
- unrecognized task types should be no workload aggregator errors when
there are removed task
types","number":210399,"url":"https://github.com/elastic/kibana/pull/210399","mergeCommit":{"message":"Fixes
Failing test: Jest Integration
Tests.x-pack/platform/plugins/shared/task_manager/server/integration_tests
- unrecognized task types should be no workload aggregator errors when
there are removed task types (#210399)\n\nResolves
https://github.com/elastic/kibana/issues/208459\r\n\r\n##
Summary\r\n\r\nThe fix added in
this\r\n[PR](#206598) to call
the\r\n`mark_removed_tasks_as_unrecognized` tasks sometimes throws an
error if\r\nthe task is in the middle of running. This PR adds a
try/catch and a\r\nretry to the `runSoon`
call.\r\n\r\n---------\r\n\r\nCo-authored-by: Elastic Machine
<elasticmachine@users.noreply.github.com>","sha":"5500eab90ca7053a7741f9274e3886f4a7460228"}},"sourceBranch":"main","suggestedTargetBranches":["9.0","8.18","8.x"],"targetPullRequestStates":[{"branch":"9.0","label":"v9.0.0","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"},{"branch":"8.18","label":"v8.18.0","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"},{"branch":"main","label":"v9.1.0","branchLabelMappingKey":"^v9.1.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/210399","number":210399,"mergeCommit":{"message":"Fixes
Failing test: Jest Integration
Tests.x-pack/platform/plugins/shared/task_manager/server/integration_tests
- unrecognized task types should be no workload aggregator errors when
there are removed task types (#210399)\n\nResolves
https://github.com/elastic/kibana/issues/208459\r\n\r\n##
Summary\r\n\r\nThe fix added in
this\r\n[PR](#206598) to call
the\r\n`mark_removed_tasks_as_unrecognized` tasks sometimes throws an
error if\r\nthe task is in the middle of running. This PR adds a
try/catch and a\r\nretry to the `runSoon`
call.\r\n\r\n---------\r\n\r\nCo-authored-by: Elastic Machine
<elasticmachine@users.noreply.github.com>","sha":"5500eab90ca7053a7741f9274e3886f4a7460228"}},{"branch":"8.x","label":"v8.19.0","branchLabelMappingKey":"^v8.19.0$","isSourceBranch":false,"state":"NOT_CREATED"}]}]
BACKPORT-->

Co-authored-by: Ying Mao <ying.mao@elastic.co>

x-pack/platform/plugins/shared/task_manager/server/integration_tests/removed_types.test.ts

@@ -28,8 +28,7 @@ jest.mock('../monitoring/workload_statistics', () => {
   };
 });
 
-// FLAKY: https://github.com/elastic/kibana/issues/208459
-describe.skip('unrecognized task types', () => {
+describe('unrecognized task types', () => {
   let esServer: TestElasticsearchUtils;
   let kibanaServer: TestKibanaUtils;
   let taskManagerPlugin: TaskManagerStartContract;
@@ -114,8 +113,16 @@ describe.skip('unrecognized task types', () => {
     taskIdsToRemove.push(notRegisteredTypeId);
 
     // To be sure that the background task that marks removed tasks as unrecognized has run after the tasks were created
-    const runSoonResponse = await taskManagerPlugin.runSoon('mark_removed_tasks_as_unrecognized');
-    expect(runSoonResponse).toEqual({ id: 'mark_removed_tasks_as_unrecognized' });
+    await retry(async () => {
+      try {
+        const runSoonResponse = await taskManagerPlugin.runSoon(
+          'mark_removed_tasks_as_unrecognized'
+        );
+        expect(runSoonResponse).toEqual({ id: 'mark_removed_tasks_as_unrecognized' });
+      } catch (err) {
+        // ignore errors and retry
+      }
+    });
 
     await retry(async () => {
       const task = await getTask(kibanaServer.coreStart.elasticsearch.client.asInternalUser);