[Security Solution] unskip timelines_table Cypress test (#230440)

## Summary

Test is passing locally. Unskipping and running Flaky test runner to
verify.

Flaky Test Runner:
https://buildkite.com/elastic/kibana-flaky-test-suite-runner/builds/9010
All tests passed!

#181466

Author: PhilippeOberti

x-pack/test/security_solution_cypress/cypress/e2e/investigations/timelines/timelines_table.cy.ts

@@ -26,8 +26,7 @@ import { clearSearchBar, searchForTimeline, toggleFavoriteFilter } from '../../.
 const mockTimeline = getTimeline();
 const mockFavoritedTimeline = getFavoritedTimeline();
 
-// Failing: See https://github.com/elastic/kibana/issues/181466
-describe.skip('timeline overview search', { tags: ['@ess', '@serverless'] }, () => {
+describe('timeline overview search', { tags: ['@ess', '@serverless'] }, () => {
   beforeEach(() => {
     deleteTimelines();
     // create timeline which is not favorited