Enables HcsEventOperationCallbackevent type in the callback supplied in HcsSetComputeSystemCallback and HcsSetProcessCallback. This allows for a compute system handle or compute process handle to get notified when the operation used to track the function call completes. When event operation completion callbacks are enabled, hcs operations with callbacks are not allowed when calling HCS functions that require an operation handle. Such function calls will fail with HCS_E_OPERATION_SYSTEM_CALLBACK_ALREADY_SET.