@Override
    protected boolean dropChangeStore(TableIdentifier changStoreIdentifier, boolean purge) {
      // drop change store in AMS
      return true;
    }
The change store will be dropped automatically by AMS when dropping the base store, so we do
nothing here
amoro-format-iceberg/src/main/java/org/apache/amoro/mixed/InternalMixedIcebergCatalog.java