It should be possible to deselect videos by clicking the checkmark before clicking the add number of photos button (top-right). I think it has to be done manually but the videos are clearly distinguishable from photos.
Well yes, that works. But its very time consuming to manually deselect all videos, especially if its a full card from a trip or something. I don't want to import videos into Lightroom. The classic version you can deselect all video clips in one click. I miss that in the new lightroom cc