message: Fix missing INT16 type handling when TFLite converter deals with the given
  input arrays
  Also it fixes experimental TFRT path as well.
diff: @@ -113,6 +113,8 @@ DataType ConvertIODataTypeToDataType(toco::IODataType dtype) {
  return DT_QUINT8;
  case toco::IODataType::INT8:
  return DT_QINT8;
  + case toco::IODataType::QUANTIZED_INT16:
  + return DT_INT16;
  case toco::IODataType::INT32:
  return DT_INT32;
  case toco::IODataType::INT64:
  