Stop lock on GMSCore crashloop

Currently, there is a way for the device to start locking when there is
a crash loop by granting trust when the phone unlocks and then
immediately GMS Core crashes. Since the time that this happens, we're
only upgrading trust, not actually unlocking the phone with trust, it
doesn't make sense that we allow revokeTrust to lock the phone. This
change stops that by setting the security window trigger to only happen
when we're actually unlocked by grant.

Fixes: 279608920
Test: tested manually
Change-Id: I9e6dfc991d81d75842d198b1b20d63360f44863e