By Matthew Abbott Jason Kelce, the Philadelphia Eagles centre, has said sorry to a young Kansas City Chiefs fan after being accused of stealing his Luchador mask during the Super Bowl LVIII celebrations. Kelce, 6, was seen wearing the mask around Las Vegas as he celebrated his brother Travis’ win. The mask, which is gold and red and shows the Chiefs logo, actually belonged to a school kid from Dallas, who Kelce apparently met at one of the parties. Kelce instantly liked the mask and wore it all night, even when he was filmed walking outside the hotel just behind Travis and Taylor Swift. On the…