It seems to me like Wanda being a mutant and Magneto's daughter is a door that's been closed in the MCU. Not because it wouldn't fit with what's just been established in the latest WandaVision episode, but I just don't see Marvel adding another layer of complexity and revelations to Wanda since it's all been tied up nicely with episode 8.
Ergo, I don't really see Marvel Comics retconning her origin yet again and turn her back into a mutant and Magneto's daughter. Going forward I see her being portrayed more in line with James Robinson's (excellent) Scarlet Witch series, ie a magical/occult kind of character.