GLENDALE, Ariz. — The Seahawks’ 2023 season is over. But before Seattle headed off into a winter of uncertainty the Seahawks gave themselves one last moment of glory. Dominated for most of the second half, Seattle used the gift of two missed field goals by veteran Matt Prater in the final 2:56 to stun Arizona 21-20 at State Farm Stadium on Sunday. Prater missed a 43-yarder with 2:56 left that could have put Arizona ahead 23-13, then missed a 51-yarder on the final play. In between, Geno Smith hit Tyler Lockett for a 34-yard TD and a two-point play to put Seattle ahead 21-20 with 1:54 left and …