fix: use correct stage when setting '--stage current'

validate_workflow.sh

@@ -511,7 +511,7 @@ scan_file() {
         handle_input_if_requested "$filename" "$is_valid"
     else
         cmd=$(prepare_cmd "$MODE" "$ftype" "$STAGE" | sed -e "s#FILE#$filename#")
-        is_valid=$(exec_cmd "$cmd" "$ftype" "$MODE" "$stage" "$logname")
+        is_valid=$(exec_cmd "$cmd" "$ftype" "$MODE" "$STAGE" "$logname")
         handle_input_if_requested "$filename" "$is_valid"
     fi
     debug "scan_file, === leaving protected area ==="