FIX Preserve y shape in TransformedTargetRegressor#31563

jeremiedbb merged 4 commits intoscikit-learn:mainscikit-learn/scikit-learn:mainfrom

kryggird:26530-preserve-y-shape-in-transformed-target-regressorkryggird/scikit-learn:26530-preserve-y-shape-in-transformed-target-regressorCopy head branch name to clipboard