Prevent Safety Center rescan on configuration change

The SC ViewModel is informed when a config change is happening and
only refreshes on pageOpen if that when it's *not* preceded by a
config change. I ditched the AutoRefreshManagers because lifecycle
observers don't have access to the info about the config change.

Fix: 237524338
Test: Manually tested, looing at the "Starting a new refresh" lines in logcat.
Change-Id: I45d6864fe16faba838dc58add5bca78ad55fcc33
3 files changed