lib: changed var to let

PR-URL: #30427
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

Author: obelaifa

lib/internal/repl/await.js

@@ -100,7 +100,7 @@ function processTopLevelAwait(src) {
  body,
 ancestors: [],
 replace(from,to,str){
-for(vari=from;i<to;i++){
+for(leti=from;i<to;i++){
 wrappedArray[i]='';
 }
 if(from===to)str+=wrappedArray[from];