By Alek Arend Brittany Mahomes is all aboard the Chad Henne bandwagon. Patrick Mahomes’ high-ankle sprain opened the door for the veteran Henne to get significant playing time in the first half of Saturday’s Jaguars-Chiefs game. Henne delivered, leading Kansas City on a 98-yard touchdown drive just before the half ended. Brittany’s message for Henne on Twitter is now going viral. “HENNE THING IS POSSIBLE,” Brittany said. Football fans are loving Brittany’s show of solidarity in Kansas City. “That’s awesome,” Joey Swoll said. “Seeing Patrick helping him on the sideline and celebrating his drive…