I have a '19 and I am wondering the same thing. I have seen some new Sequoias with factory front license plate holder that covers up the bottom edge of the radar sensor. I would think if the bull bar doesn't cover up more than the license plate holder covers, it should be fine.
I have already run through snow and ice that covered up the front sensor, and when it did, I got a notification that the sensor needed cleaning. I bet if the bull bar covers up some of the sensor, the same notification would come on. But I'm going to watch this thread in the hopes someone else has already solved this puzzle for us.