Panthers linebacker Frankie Luvu nearly gifted himself an early birthday present Sunday. The fifth-year linebacker, who turned 26 years old Monday, dropped what likely would’ve been a pick-six late in the second quarter of the Panthers’ 19-16 loss to the Giants. New York quarterback Daniel Jones lofted a sideline throw directly toward Luvu with the game tied 6-6. But the ball floated abnormally long, Luvu mistimed his jump and Jones’ pass sailed through the linebacker’s outstretched hands and out of bounds. “The Carolina Panthers have to win the turnover battle to win, like every team that’s i…