Currently AppBarLayout lacks the functionality which
CollapsingToolbarLayout does, to draw a drawable behind
the status bar. This CL adds that functionality.
Also added related functionality to Catalog
PiperOrigin-RevId: 242949840
Caused by AppBarLayout + WindowInset commit, which breaks some incorrect
assumptions in CTL. Fixed by breaking apart ViewOffsetHelper
so that its tracking of layout coordinates, and applying
offsets, are done at different times.
Also fixed catalog's AppBar sample layouts to set IDs,
enabling state restoration to work.
PiperOrigin-RevId: 239592953
