Set default rotation in StatusBarWindowView to -1

So the view will update its orientation and padding when the
orientation is first reported as 0 (ROTATION_NONE)

Also handle case where an app may be letterboxing, so we should always
add padding to the StatusBarWindowViews based on the safe inset

Test: manual
Fixes: 151735145
Change-Id: Ic40f305ff8eb83fe16691842b8b3897bdaad157c