SPOILER ALERTt: The story includes details about the Season 4 finale of Jane the Virgin on the CW. What??? That was probably the reaction of every Jane the Virgin fan watching the Season 4 finale after the final scene. The show is known for loading its season finales with big twists and cliffhangers in the final minutes but tonight’s was the mother of all twists — Jane, walking into Rafael’s apartment expecting a wedding proposal from him instead came face to face with a…