Setting TaskRecord#mUserSetupComplete directly from Settings

TaskRecord#mUserSetupComplete flag was being set by checking
UserController#mSetupCompletedUsers which was being populated by a
callback which was getting delayed long enough for some tasks being
launched with mUserSetupComplete set to false, which is not expected for
any task other than Setup Wizard. This change checks the flag directly
from Settings before setting the property.

Bug: b/27455564
Change-Id: I9ae2e969b590a95f71002a54c7de224b26e9da79