Revert the changes I made in 0474940ee3
and return to the hybrid layout + inset system.
The big issue is edge effects and touch events. I need to properly
clamp edge effects to the padding, but that also requires me to use
stretch edge effects everywhere to prevent weird visual isuses. This
may happen in the future in RecyclerView 1.3.0, but development on such
has been minimal. Meanwhile, touch events will be intercepted by the
now overlapping view if one clicks the wrong portion of the bar.
Nothing I can do given how touch events are intercepted by the bottom
sheet, at least right now.
More feasible to keep the current system and mitigate whatever issues
are present there.
fe38c70d34