Yeah, from what Nrp said, I think it’s clear that there is no USB Power Delivery / no charging the laptop through the GPU’s USB-C port, at least for the current GPU module.
Basic USB 2.0 functionality would not include USB-PD.
But it does look possible for USB-PD to be added to the GPU’s port in the future. The expansion bay connector looks to allow for up to 90W fed back to the mainboard. But it would likely require additional power supply circuity within the GPU module, taking up space and increasing cost. High wattage USB-PD EPR chips are very new, so they’re probably expensive at this time.
Expansion bay connector pinout: ExpansionBay/Electrical at main · FrameworkComputer/ExpansionBay · GitHub