Universal has modified the Harry potter ride so it can accommodate larger guests.
I haven’t seen an explanation as to how much of a difference this makes and whether the ride experience is different for these guests, but it’s still good that they are accommodating more guests. Universal already does this via modified seating for their Incredible Hulk Coaster and Dragon’s Challenge coasters, so adding this to the Forbidden Journey ride seems to be a natural fit. Unfortunately, Rip Ride Rockit was down the last 4 times I went to Universal, so I haven’t had a chance to try it to see whether I would fit. (Since I weigh enough that I generally have to go with modified seating to ride.)