[VectorCombine] foldSelectShuffle - remove extra adds of old shuffles to worklist#127999

RKSimon merged 1 commit intollvm:mainllvm/llvm-project:mainfrom

RKSimon:vectorcombine-remove-extra-worklist-addsRKSimon/llvm-project:vectorcombine-remove-extra-worklist-addsCopy head branch name to clipboard