The default focus highlight will indicate the focused view in view
system when user navigate the focus without touch.
This CL will clear it if the window focus has lost or it re-entered the
touch mode, so we won't see the wrong highlights in different windows
while using multi-window mode.
Bug: 244273901
Test: atest DefaultFocusHighlightTest
Test: multi-window, use dpad to navigate focus
Change-Id: Iad07c77b4ae16f3c88797eddd749e0aedebdd4fc
5fc73f8f2f