@Override
  public long getReadTimeNanos() {
    return delegate.getReadTimeNanos();
  }
Iceberg original IcebergPageSource has some problems for mixed-format table, such as iceberg
version, table type.
amoro-format-mixed/amoro-mixed-trino/src/main/java/org/apache/amoro/trino/unkeyed/IcebergPageSource.java