Caroline Framke Chief TV CriticHalfway through the first episode of “Fate: The Winx Saga,” I realized exactly why it felt so familiar.The new Netflix series follows Bloom (Abigail Cowen), a bright-eyed, redheaded American fairy with a mysterious past who enrolls at Alfea, a legendary fairy school in an undisclosed magical location (though everyone else’s British accents provide a hint).