IME windows, like wallpaper windows, have their visibilities
managed outside of the transition system. This means that
altering their visibilities can get us stuck in situations
that can't be undone. So, like wallpaper, just check and
skip explicit visibility changes on IME windows.
Bug: 230733128
Test: messages in portrait, open ime, swipe to home, open
messages in landscape, swipe home, open messages in
portrait again (ime should be visible).
Change-Id: I0df284cce19f367003570a4e882dd6ffbc8dbef6
b54270fbf9