By Daniel Chavkin The running back has been dealing with a thigh injury all week. Panthers running back Christian McCaffrey is officially active for Carolina’s game vs. the Cardinals at 4:05 p.m. ET Sunday. The running back missed practice on Wednesday and Thursday this week, but it was reported late Saturday night that he was expected to play against Arizona despite a thigh injury. However, according to ESPN’s Adam Schefter, McCaffrey and the Panthers wanted to see how he would respond in warmups before making an official decision. McCaffrey’s status was in doubt enough that Carolina quarterb…