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

src/com/android/settings/biometrics/fingerprint/FingerprintSettings.java

@@ -691,10 +691,16 @@ public class FingerprintSettings extends SubSettings {
             // retryFingerprint() will be called when remove finishes
             // need to disable enroll or have a way to determine if enroll is in progress
             final boolean removalInProgress = mRemovalSidecar.inProgress();
+            final boolean isDeviceOwnerBlockingAuth =
+                    RestrictedLockUtilsInternal.checkIfKeyguardFeaturesDisabled(
+                            getContext(), DevicePolicyManager.KEYGUARD_DISABLE_FINGERPRINT,
+                            mUserId) != null;
+
             CharSequence maxSummary = tooMany ?
                     getContext().getString(R.string.fingerprint_add_max, max) : "";
             mAddFingerprintPreference.setSummary(maxSummary);
-            mAddFingerprintPreference.setEnabled(!tooMany && !removalInProgress && mToken != null);
+            mAddFingerprintPreference.setEnabled(!isDeviceOwnerBlockingAuth
+                    && !tooMany && !removalInProgress && mToken != null);
         }
 
         private void createFooterPreference(PreferenceGroup root) {