RowData transformRowKind(ChangeLogDataIterator.ChangeActionTrans<RowData> trans) {
    RowData rowData = trans.row();
    rowData.setRowKind(convertToFlinkRowKind(trans.changeAction()));
    return rowData;
  }
@param rowData It may have more columns than readSchema. Refer to {@link
    FlinkUnkyedDataReader}'s annotation.
amoro-format-mixed/amoro-mixed-flink/amoro-mixed-flink-common/src/main/java/org/apache/amoro/flink/read/hybrid/reader/RowDataReaderFunction.java