Light on its feet, propelled by fast, witty asides and clean-lined storytelling, “Raya and the Last Dragon” comes from Walt Disney Animation Studios. It isn’t so much an original as it is a “familiar but highly satisfying.” Also: not a sequel! How did that happen? Like “How to Train Your Dragon” and “Kung Fu Panda” (both from the rival DreamWorks animation house), “Raya and the Last Dragon” .