cmd/utils: expand tilde in --jspath (#22900)

cmd/utils/flags.go

@@ -675,10 +675,10 @@ var (
 	}
 
 	// ATM the url is left to the user and deployment to
-	JSpathFlag = cli.StringFlag{
+	JSpathFlag = DirectoryFlag{
 		Name:  "jspath",
 		Usage: "JavaScript root path for `loadScript`",
-		Value: ".",
+		Value: DirectoryString("."),
 	}
 
 	// Gas price oracle settings