I am not sure if you will find any travel trailer model with 3-season patio doors from the factory (I can’t speak to Forest River products) but they can easily be added to any brand or model. Why not just find a floorplan you like and then buy a set of 3-season doors or sliding patio doors?
My brother had a 2021 Rogue Vengeance 21v and added patio doors pretty easily. Ultimately he didn’t care for the trailer because the garage was not separate from the living area and the generator at the front made it a bad ride for a bumper pull travel trailer. He bought a 2021 Fuzion Impact 5th wheel with separate garage, and patio /glass rear doors instead. I haven't asked lately, but he may still have the Rogue for sale.