If the sensor can be paired with your lutron pro hub, sends state changes via telnet, and does not require pairing directly with the switch, I believe you should be able to use the lutron motion sensor. I did find this article from a few years ago which suggests no. However, as long as you have the pro hub you should be able to use any Hubitat-compatible motion sensor to accomplish what you want using your existing lutron switch.
I have a ton of Lutron switches and Picos but not motion sensors so I can't confirm whether this is still the case, but @aaiyar or @rlithgow1 might know for sure.
