[LV][EVL] Replace VPInstruction::Select with vp.merge for predicated div/rem#154072

Mel-Chen wants to merge 2 commits intollvm:mainllvm/llvm-project:mainfrom

Mel-Chen:evl-get-new-select-condMel-Chen/llvm-project:evl-get-new-select-condCopy head branch name to clipboard