Fix get_shape in statistics when argument is bytes, not dict 
Will fix duckdb-index step for [common-canvas/commoncatalog-cc-by](https://huggingface.co/datasets/common-canvas/commoncatalog-cc-by)


Fix get_shape in statistics when argument is bytes, not dict : Will fix duckdb-index step for [common-canvas/commoncatalog-cc-by](https://huggingface.co/datasets/common-canvas/commoncatalog-cc-by)

