Impossible to use string constant or enum as a callback argument

[romantaranenko]

A configuration like that is impossible to use

       callbacks:
            after:
                on_initial_fraud_pass:
                    on: !php/const Services\Account\Constants\FraudStateTransition::INITIAL_FRAUD_PASS
                    do: Services\Account\State\TransitionCallbackManager::transitionUserState
                    args:
                        - 'object'
                        - !php/const Services\Account\Constants\AccountStateTransition::ACTIVATE

Since expression parser is applied and constant returns unquoted string