Before i break out the solder gun and make one myself, i wanted to ask. Is there a unit that uses magsafe magnets that does wireless charging pass through? The idea would be to have this device on the back of a phone and when a charge is applied while it's on a phone it passes the charge through to the phone.

Maybe the Heltec MeshPocket?

I know it supports QI2 but I'm not sure if it can do pass-through or not.

I think you’re right, MeshPocket is the closest option. Its docs read like it should act like any other power bank. There’s no explicit warnings that it cannot charge a phone while receiving a charge.

https://wiki.heltec.org/docs/devices/open-source-hardware/nrf52840-series/meshpocket/Usage

I can confirm that the MeshPocket does indeed allow pass through charging.

Yeah, it says so in the FAQ

Does it support charging and discharging simultaneously?

Yes. You can charge the MeshPocket via the USB-C port while simultaneously using its wireless charging to charge your phone.
(Current power allocation: Wired charging input 10W, wireless charging output 5W. Total output may be limited by input power capability.)

https://heltec.org/project/meshpocket/