Release PREVENT_BYPASS_KEYGUARD flag

this will make it so that we ensure that keyguard cannot be dismissed
without being properly authed.

Fixes: 272249570
Bug: 273341787
Test: weeks of user testing dismising the keyguard and authing.
Change-Id: I5a5714fc1276557ccf1522dbdf0c8d80a5959488
1 file changed