Is it possible to replace cracked plastic part?

Hey folks! A garage door slammed down on the back of my 2021 RAV4 as I was exiting. The plastic part between the rear window and the top (where the third brake light is) cracked in two different spots, as you can see in the photos. I suspect this happened because it was really cold and the plastic got a bit brittle. There doesn't seem to be any other damage. Does anyone know what this part is called or what the part number is? And is it possible to fix this myself?