THe few interviews and chats ive looked into today regarding this its pretty clear that Robert Jordans dragon is a male and allways should be a male.
https://dragonmount.com/forums/topic...dragon-reborn/
"Q: It would be the same soul, or it would be a different soul?
RJ: It would be the same soul. That is, that is the belief of the world that I've set up, that it's the same soul. It's a soul of someone bound to the Wheel, which is spun out for the purposes, for the Wheel's purposes really, to attempt to re-balance the Weaving of the Pattern.
But the soul would always be male. Souls don't change gender, so . . .
. . . so the soul of the Dragon Reborn is always going to be male, just as Birgitte's soul is always born as a woman, just as Ameresu's soul . . . is always born as a woman. There are divisions here, and they are not interchangeable."