Update flag check to MigrateClocksToBlueprint

Make sure we add the lock icon view to the KeyguardRootView
if the migrate clocks to blueprint flag is enabled.

Flag: ACONFIG com.android.systemui.migrate_clocks_to_blueprint TEAMFOOD
Fixes: 331607331
Test: manually disable udfps refactor + keyguard bottom area
refactor flags. enable migrate clocks to blueprint flag

Change-Id: I07cd77f035e6a4630c77dd26b4a502a8c36d5033