Fix bad animation when pressing Home with translucent activity

Force a setAppVisibility if the previous app was translucent, so that
the resumed app is added to the opening app list. Otherwise opening
app list is empty and the transition can't be set up correctly.

bug: 28463843
Change-Id: I7f8e28d0f804c799a429743df6fc501c06d62f21
1 file changed