[NVPTX] fix type propagation when expanding Store[V4 -> V8]#151576

Prince781 merged 1 commit intollvm:mainllvm/llvm-project:mainfrom

Prince781:dev/pferro/fix-nvptx-mov-optPrince781/llvm-project:dev/pferro/fix-nvptx-mov-optCopy head branch name to clipboard