[VPlan] Get Addr computation cost with scalar type if it is uniform for gather/scatter. (NFC)#150371

ElvisWang123 merged 2 commits intollvm:mainllvm/llvm-project:mainfrom

ElvisWang123:lv-fix-addrComp-costElvisWang123/llvm-project:lv-fix-addrComp-costCopy head branch name to clipboard