Reset split selection state when RecentsView resets

* We weren't calling reset on the views
involved in split selection when recents view gets
a reset call (oops)
* Use device theme for split placeholder theme instead
of hardcoding to white

Fixes: 206155455
Change-Id: I3768fd574cb21eec9562d89c1a93eaa3f53d5ff1
4 files changed