[Security Solution][Endpoint] Enable API test for creation of DOT pre…

…fixed indices for serverless MKI runs (elastic#198560)

## Summary

- Enable API test for creation of DOT prefixed indices for serverless
MKI runs

x-pack/test/security_solution_api_integration/test_suites/edr_workflows/policy/trial_license_complete_tier/datastream_index_creation.ts

@@ -28,8 +28,7 @@ export default function ({ getService }: FtrProviderContext) {
   const config = getService('config');
   const isServerless = config.get('serverless');
 
-  // FIXME:PT Remove @skipInServerlessMKI and enable it for MKI
-  describe('@ess @serverless @skipInServerlessMKI Creation of DOT indices for elastic defend policies', function () {
+  describe('@ess @serverless Creation of DOT indices for elastic defend policies', function () {
     let testData: PolicyTestResourceInfo;
 
     const getExpectedIndexList = (namespace: string): string[] => {