message: Move ColumnReader type to be protected (instead of private)
diff: @@ -130,13 +130,13 @@ protected:
  idx_t max_repeat;
  ParquetReader &reader;
  + LogicalType type;
  private:
  void PrepareRead(parquet_filter_t &filter);
  void PreparePage(idx_t compressed_page_size, idx_t uncompressed_page_size);
  void PrepareDataPage(PageHeader &page_hdr);
  - LogicalType type;
  const duckdb_parquet::format::ColumnChunk *chunk;
  duckdb_apache::thrift::protocol::TProtocol *protocol;
  