v0.17.7

Bug fixes

• Fix TypeError: ArrowExtensionArray bool[pyarrow] does not support reduction 'all' in distributed Ray tests caused by Ray 2.56.0 returning Arrow-backed DataFrames from batch callbacks. Fixed by using .to_numpy() instead of .values when comparing preprocessed column values.
• Fix row-ordering mismatch between local and Ray-preprocessed DataFrames in tests. Ray 2.56.0 Arrow-backed list columns (vector, sequence, text indices) produced pyarrow scalars and Python lists whose repr() differed from the tobytes() hash of local numpy arrays, causing wrong row pairings. Fixed by normalizing all array-like values through repr(tolist()) in the sort key so both backing stores produce identical hashes.
• Add on_preprocess_progress callback with partition-level tracking (released in 0.17.6); add regression test covering features that call add_feature_data without invoking map_partitions.