At systemReady time, the window manager needs to obtain values from the lock
settings service (e.g. whether the lock screen is disabled). During the
initial boot of a wiped device, the window manager was getting the wrong
values because LockSettingsService.systemReady/migrateOldData had not yet been
called.
Change-Id: I60825d0e4fad53a5b4349dabf9e5e299b863d0d0
(cherry pick of 2458abaf6676d5015af733c1010ecd67a085e9e2 from jb-aah-dev)