Defend Hardware Callstacks => Production (#190553)

## Summary

Defend Hardware Callstacks are going GA in 8.16.0. This PR will let
users opt out via Advanced Policy.

### For maintainers

- [ ] This was checked for breaking API changes and was [labeled
appropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)

x-pack/plugins/security_solution/public/management/pages/policy/models/advanced_policy_schema.ts

@@ -1285,6 +1285,17 @@ export const AdvancedPolicySchema: AdvancedPolicySchemaType[] = [
       }
     ),
   },
+  {
+    key: 'windows.advanced.events.callstacks.use_hardware',
+    first_supported_version: '8.16',
+    documentation: i18n.translate(
+      'xpack.securitySolution.endpoint.policy.advanced.windows.advanced.events.callstacks.use_hardware',
+      {
+        defaultMessage:
+          'Use hardware callstacks (e.g. Intel CET) if supported by the OS and CPU.  Default: true',
+      }
+    ),
+  },
   {
     key: 'windows.advanced.events.process_ancestry_length',
     first_supported_version: '8.15',