As relevant as that seemed when it was uploaded (months ago), I don't see Jon warging in the show, regardless of whether or not he does in the books.
I'm 90% convinced that all non-Bran warging is out. The only thing that gives me pause is that they went ahead with Arya's blindness, which is a kind of silly plot device to help Arya develop her powers in the books, but would be a ridiculously silly plot device if there's no warging present at all.