[Security Solution][Endpoint][Response Actions] Enable feature flag for execute by default (#155686)

From 8.8 `responseActionExecuteEnabled` is set to `true` by default

## Summary

Enables the `responseActionExecuteEnabled` feature flag by default for
`execute` response action.


### Checklist

- [x] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios

x-pack/plugins/security_solution/common/experimental_features.ts

@@ -96,7 +96,7 @@ export const allowedExperimentalValues = Object.freeze({
   /**
    * Enables the `execute` endpoint response action
    */
-  responseActionExecuteEnabled: false,
+  responseActionExecuteEnabled: true,
 
   /**
    * Enables top charts on Alerts Page

x-pack/plugins/security_solution/public/common/__mocks__/experimental_features_service.ts

@@ -14,7 +14,9 @@ const ExperimentalFeaturesServiceMock = {
   get: jest.fn(() => {
     const ff: ExperimentalFeatures = {
       ...allowedExperimentalValues,
-      responseActionExecuteEnabled: true,
+      // add new experimental features set to `true` here
+      // e.g.
+      // responseActionDownloadFileEnabled: true,
     };
 
     return ff;

x-pack/plugins/security_solution/public/management/cypress/e2e/mocked_data/endpoint_role_rbac.cy.ts

@@ -46,8 +46,7 @@ describe('When defining a kibana role for Endpoint security access', () => {
         'Host Isolation Perform the "isolate" and "release" response actions.Host Isolation sub-feature privilegeAllNone',
         'Process Operations Perform process-related response actions in the response console.Process Operations sub-feature privilegeAllNone',
         'File Operations Perform file-related response actions in the response console.File Operations sub-feature privilegeAllNone',
-        // TODO: uncomment item below once Execute response action FF is enabled
-        // 'Execute Operations Perform script execution on the endpoint.Execute Operations sub-feature privilegeAllNone',
+        'Execute Operations Perform script execution on the endpoint.Execute Operations sub-feature privilegeAllNone',
       ]);
   });
 

x-pack/test/api_integration/apis/security/privileges.ts

@@ -52,6 +52,7 @@ export default function ({ getService }: FtrProviderContext) {
         'host_isolation_all',
         'process_operations_all',
         'file_operations_all',
+        'execute_operations_all',
       ],
       uptime: ['all', 'read', 'minimal_all', 'minimal_read'],
       securitySolutionCases: ['all', 'read', 'minimal_all', 'minimal_read', 'cases_delete'],

x-pack/test/api_integration/apis/security/privileges_basic.ts

@@ -124,6 +124,7 @@ export default function ({ getService }: FtrProviderContext) {
               'trusted_applications_all',
               'trusted_applications_read',
               'file_operations_all',
+              'execute_operations_all',
             ],
             uptime: ['all', 'read', 'minimal_all', 'minimal_read'],
             securitySolutionCases: ['all', 'read', 'minimal_all', 'minimal_read', 'cases_delete'],