Don't know if you ever figured it out but I had a similar issue with my 2021 Ram 1500 the day after I bought it brand new with the interior lights not shutting off. I took it back to the dealer and they couldn't figure it out at first. After 4 days of them changing out the BCM and reprogramming the PCM and whatever other troubleshooting they were doing, they found that the rear dome light power wire was shorted to the screw holding the stupid thing up.