When a dialog has been minimized to recents the windows behind it won't be visible. Yet we were requiring them to be visible in order to be included in the ones being restored. This left the background windows invisible on resume and showed home behind floating dialogs instead of the activity that launched the dialogs. Fixes bug 11067724. Change-Id: Icadd7ec8fe7c73b52982b6ff5b5d98b8fb8476b0