[EDR Workflows][8.12] Reenable endpoint exceptions FTR (#174843)

## Summary

manual backport in order to be able to use flaky test runner:
- https://github.com/elastic/kibana/

flaky runner jobs:
- 10x:
https://buildkite.com/elastic/kibana-flaky-test-suite-runner/builds/4866
10/10 ✅
- 100:
https://buildkite.com/elastic/kibana-flaky-test-suite-runner/builds/4868
100/100 ✅

> [!note]
> don't forget to revert the `temp` commit ✅

---------

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

x-pack/test/security_solution_endpoint/apps/integrations/endpoint_exceptions.ts

@@ -27,9 +27,7 @@ export default ({ getPageObjects, getService }: FtrProviderContext) => {
   const find = getService('find');
   const unzipPromisify = promisify(unzip);
 
-  // Flaky: https://github.com/elastic/kibana/issues/173684
-  // Flaky: https://github.com/elastic/kibana/issues/173685
-  describe.skip('Endpoint Exceptions', function () {
+  describe('Endpoint Exceptions', function () {
     targetTags(this, ['@ess', '@serverless']);
 
     this.timeout(10 * 60_000);