CAGLIARI, Italy — Jakub Jankto just wants to play football, like he always did. The Czech midfielder sits by his locker in the dressing room at Unipol Domus, Cagliari Calcio’s temporary home while the Stadio Sant’Elia silently awaits reconstruction next door. A small red-and-blue shirt cut from cardboard marks his place, with No. 21 printed on it. To the right, Paulo Azzi; to the left, Nicolas Viola, a leader who…