Describe the issue

In#16154/#19026 I am deprecating implicitly setting the pickradius of an Artist viaset_picker(<number>), because this causes various arising from the fact thatTrue == 1 andFalse == 0 (listed in the discussions of the issues above). I am still convinced that this change is for the better. However, now there are a few places where calls toset_picker(<number>) (usually implicit though kwargs, e.g.plot(..., picker=<number>)) now need to be replaced byset(picker=True, pickradius=<number>), which is perhaps unnecessarily verbose (I'd guess the vast majority of people setting the pickradius indeed want to turn on picking). So we could consider makingset_pickradius() also implicitly callset_picker(True), or perhaps even internally differentiatepicker = <unset> (i.e., False, but gets turned on byset_pickradius) andpicker = None (i.e. disabled). Or we could just decide that this whole deprecation was not worth it and go back to overloadingpicker to support pickradius values.

Thoughts?