Breaking out of the layer loop left every sensor below the consuming
layer untouched, so one that was hovered stayed hovered: moving onto a
widget in a layer above never ended the hover of what it covered, and
nothing ever would.
Consumption now carries into the hit test rather than stopping the walk.
A covered widget is simply not in shape, so its hover ends and its
`HoverEnd` runs; `should_run` already refuses non-position senses once
the hover is not on, so nothing else reaches it. It is applied after a
layer rather than during one, so senses on the same layer still do not
block each other.
iris
5494642dec