Fix IME and NavBar overlap with Direct Reply

In phone landscape, when the navigation bar is on the right,
and when the status bar is forcing the IME and NavBar, make
sure that the nav bar and IME don't overlap, even if the
NavBar is only transient.

Bug: 28914905
Change-Id: I22921f1aca7970c2d02dfd88408eb15c5b17151f