The same night Kyle Chandler won an Emmy for the final season of “Friday Night Lights,” he shut the door on its future. Speaking at the ATX Television Festival during a panel honoring the 20th anniversary of the acclaimed drama’s premiere, the man forever known as Coach Taylor shared a story he said he’d “never mentioned before.” “That night when I did win the award, it only serves as credit to the way you guys ended the show,” Chandler said. “I…