[MRG] Fix: SkLearn `.score()` method generating error with Dask DataFrames#12462

jnothman merged 7 commits intoscikit-learn:masterscikit-learn/scikit-learn:masterfrom

ZWMiller:fix_scoring_with_dask_dataframesZWMiller/scikit-learn:fix_scoring_with_dask_dataframesCopy head branch name to clipboard