LAS VEGAS — Before the Chiefs’ 2022 NFL draft class emerged as one of the deepest and most pivotal in franchise history, something about its composition was so striking as to feel potentially revealing. It wasn’t simply that the 10-man group appeared to deftly address the team’s greatest needs. Or that it seemed a particularly excitable bunch on draft night, with Trent McDuffie declaring that putting on his Chiefs jersey “made it light like a flame under me” and ever-eager George Karlaftis talking fasterthanthis about his love of the game and Jaylen Watson “running full speed down the street” …