This issue is to track the improvements that should be made to the DecisionBoundaryDisplay:

• handle multiclass classification
  • target a specific class: ENH accept class_of_interest in DecisionBoundaryDisplay to inspect multiclass classifiers #27291
  • represent the max of probability
• allow to plot the decision boundary using a keyword without the need to call DecisionBoundaryDisplay twice
• Allow to pass xlim/ylim to overwrite the limit of the data seen in from_estimator.