Update face & fingerprint pref logic

This change makes it possible for face & fingerprint settings to be
presented to the user only to delete their face/fingerprint if the
feature has been disabled by a device admin.

Bug: 323280069
Test: atest BiometricFaceStatusPreferenceControllerTest
BiometricFingerprintStatusPreferenceControllerTest

Change-Id: I62cab3ddf7cf708d1b0b4da61dc3ffb7052dee84