private static boolean isIncrementalRecord(Struct sourceStruct) {
        return !(SnapshotRecord.TRUE == SnapshotRecord.fromSource(sourceStruct));
    }
convert debezium operation to canal-json operation type

@param record source record
@return source table DML operation type
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/postgres-cdc/src/main/java/org/apache/inlong/sort/cdc/postgres/table/PostgreSQLReadableMetaData.java