Add Biometrics settings inside private space One Lock settings

This includes below changes:
- Add Biometrics preferernce in Private Space One Lock settings page
- Face and Fingerprint enrolment for Private profile
- Feature is behind flag android.multiuser.enable_biometrics_to_unlock_private_space

Screenshots:
go/ss/9cWZRAuvGGW7gMm.png
go/ss/B3NoFbL3KbpSzeN.png
go/ss/7xH3DLi9d6Lu2mR.png
go/ss/8WBEgKychWpduXg.png
go/ss/8pmPGshd9aiPvVC.png
go/ss/AFPBPbiaBBvTj3p.png
go/ss/3fE4XKLLUdP8LmF.png

Bug: 308862923
Test: atest CombinedBiometricStatusUtilsTest, atest FaceFingerprintUnlockControllerTest
Change-Id: I1853107a4df4fc97db53c97524c6d44a4f554e37

src/com/android/settings/privatespace/onelock/UseOneLockControllerSwitch.java

@@ -31,6 +31,7 @@ import android.os.UserHandle;
 import android.os.UserManager;
 import android.util.Log;
 
+import androidx.annotation.Nullable;
 import androidx.preference.Preference;
 import androidx.preference.PreferenceScreen;
 
@@ -122,15 +123,15 @@ public class UseOneLockControllerSwitch extends AbstractPreferenceController
     }
 
     /** Method to handle onActivityResult */
-    public boolean handleActivityResult(int requestCode, int resultCode, Intent data) {
+    public boolean handleActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
         if (requestCode == UNUNIFY_PRIVATE_LOCK_FROM_DEVICE_REQUEST
-                  && resultCode == Activity.RESULT_OK) {
+                  && resultCode == Activity.RESULT_OK && data != null) {
             mCurrentDevicePassword =
                       data.getParcelableExtra(ChooseLockSettingsHelper.EXTRA_KEY_PASSWORD);
             separateLocks();
             return true;
         } else if (requestCode == UNIFY_PRIVATE_LOCK_WITH_DEVICE_REQUEST
-                  && resultCode == Activity.RESULT_OK) {
+                  && resultCode == Activity.RESULT_OK && data != null) {
             mCurrentProfilePassword =
                       data.getParcelableExtra(ChooseLockSettingsHelper.EXTRA_KEY_PASSWORD);
             unifyLocks();