1.5.2
Imp splitting of test_preprocessing.py
TST Extend tests for `scipy.sparse.*array` in `sklearn/preprocessing/tests/test_common.py` (#27164)
FIX 1d sparse array validation (#28988)
API Standardize `X` as `inverse_transform` input parameter (#28756)
MAINT cleanup utils.__init__: move nan utils into dedicated submodule (#28495)
FIX Do not warn when using polars DataFrames in DecisionBoundaryDisplay.from_estimator (#28718)
MAINT cleanup utils.__init__: move _to_object_array into utils.validation (#28661)
TST Extend tests for `scipy.sparse.*array` in `test_polynomial.py` (#27166)
MAINT Clean up deprecations for 1.5: in KBinsDiscretizer (#28817)