message: Add "onValueChanging" option into checkErrorsMode property choices,
diff: @@ -5651,7 +5651,7 @@ Serializer.addClass("survey", [
  {
  name: "checkErrorsMode",
  default: "onNextPage",
  - choices: ["onNextPage", "onValueChanged", "onComplete"],
  + choices: ["onNextPage", "onValueChanged", "onValueChanging", "onComplete"],
  },
  {
  name: "textUpdateMode",
  