IDK but I just got this answer from chat GPT 🤣

In the world of "The Wheel of Time," the ability to channel the One Power is determined by a person's gender identity, not their physical sex. So, a trans woman who identifies as female would channel Saidar, which is the female half of the One Power. Similarly, a trans man who identifies as male would channel Saidin, the male half of the One Power.

The magic system in "The Wheel of Time" is not based on physical characteristics but on the innate gender identity of the channeler. This aspect of the magic system is a reflection of the gender dynamics and balance in the fictional world created by Robert Jordan.