[Drag Interaction tests] Redo nesting to split on registering/invoking
[Drag Interaction tests] Redo nesting to split on registering/invoking

... instead of by event type.

NextTuesday/plottable,softwords/plottable,NextTuesday/plottable,softwords/plottable,palantir/plottable,softwords/plottable,palantir/plottable,palantir/plottable,palantir/plottable,NextTuesday/plottable