Fix connected apps for headless (was previously always checking allowed
apps on user 0).

Also correctly makes DISALLOW_DEBUGGING_FEATURES global to block adb on
HSUM

Test: Manual use of connected apps settings on HSUM
Fixes: 264853055
Fixes: 266542871
Change-Id: I5caecdeeefa42671f1410a07ce06646610256905
7 files changed