Are the persons nominated to be created cardinals eligible to participate in the conclave before the consistory?

[Pope Francis announced the consistory for the creation of new cardinals](https://www.vaticannews.va/en/pope/news/2023-07/pope-announces-consistory-for-creation-of-new-cardinals.html) today. The consistory will be held on 30th September, i.e. there is 3 month period during much can happen. **My question**: are the persons nominated to be created cardinals eligible to participate in the conclave? Of course, they are not formally created cardinals, but maybe there are some rules for the election of the next pontiff that specify more details of this and make such exceptions. I am looking pretty much on the prefect-elect of the Dicastery for the Doctrine of the Faith, [Víctor Manuel Fernández](https://en.wikipedia.org/wiki/V%C3%ADctor_Manuel_Fern%C3%A1ndez) who may be elected pope in the next conclave if only he is properly made cardinal before that conclave. I am guessing that he can take name John XXIV.