Skip only Risk Engine initializing test with a FIPS issue (#195651)

## Summary

More investigation is needed to ensure that the `remove legacy risk
score transform` test is passing in promotion pipelines. However, that
particular feature that the test asserts (Legacy Entity Risk Scoring)
was never available in Serverless. Therefore, we're enabling the broader
tests, and just skipping the one containing the FIPS issue.

x-pack/test/security_solution_api_integration/test_suites/entity_analytics/risk_engine/trial_license_complete_tier/init_and_status_apis.ts

@@ -26,8 +26,7 @@ export default ({ getService }: FtrProviderContext) => {
   const riskEngineRoutes = riskEngineRouteHelpersFactory(supertest);
   const log = getService('log');
 
-  // Failing: See https://github.com/elastic/kibana/issues/191637
-  describe.skip('@ess @serverless @serverlessQA init_and_status_apis', () => {
+  describe('@ess @serverless @serverlessQA init_and_status_apis', () => {
     before(async () => {
       await riskEngineRoutes.cleanUp();
     });
@@ -298,8 +297,8 @@ export default ({ getService }: FtrProviderContext) => {
           firstResponse?.saved_objects?.[0]?.id
         );
       });
-
-      describe('remove legacy risk score transform', function () {
+      // Failing: See https://github.com/elastic/kibana/issues/191637
+      describe.skip('remove legacy risk score transform', function () {
         this.tags('skipFIPS');
         it('should remove legacy risk score transform if it exists', async () => {
           await installLegacyRiskScore({ supertest });