It was no secret that Andy Burnham would seek to replace Keir Starmer should he win the Makerfield by-election. After he achieved victory, though — exceeding even the most optimistic polling — Starmer did not go gently into that good night. Instead, he said in no uncertain terms that he would fight Burnham in any leadership challenge. At this moment in time, a leadership challenge would have proven to be very damaging for the Labour Party. Because this is Keir Starmer we’re talking about, though, it looks like Burnham doesn’t have to worry. Because true to form, Starmer has now U-turned…