[8.12] [Security Solution][Detection Engine] unskip ES|QL tests (#172654

) (#172836)

# Backport

This will backport the following commits from `main` to `8.12`:
- [[Security Solution][Detection Engine] unskip ES|QL tests
(#172654)](#172654)

<!--- Backport version: 8.9.7 -->

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

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Summary\r\n\r\nUnskips tests from
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Checklist\r\n\r\nDelete any items that are not applicable to this
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Co-authored-by: Vitalii Dmyterko <[email protected]>

x-pack/test/security_solution_cypress/cypress/e2e/detection_response/detection_engine/rule_creation/esql_rule_ess.cy.ts

@@ -86,8 +86,7 @@ describe('Detection ES|QL rules, creation', { tags: ['@ess'] }, () => {
     });
   });
 
-  // FLAKY: https://github.com/elastic/kibana/issues/172074
-  describe.skip('ES|QL query validation', () => {
+  describe('ES|QL query validation', () => {
     beforeEach(() => {
       login();
       visit(CREATE_RULE_URL);