Adam B. Vary Senior Entertainment WriterSPOILER WARNING: Do not read if you haven’t yet watched Season 1, Episode 1 of Disney Plus’ “The Falcon and the Winter Soldier.”After nine weeks of “WandaVision” — the boldest departure ever for the Marvel Cinematic Universe — the opening of Marvel Studios’ second television adventure, “The Falcon and the Winter Soldier,” felt like stepping inside a pair of comfortable shoes.