We want to show this page as long as active unlock is enabled. The
underlying check of isAvailable checks if the appropriate biometrics are
available and updates the title accordingly.
Test: manual test, confirm combined page appears when active unlock on
Test: atest BiometricsSafetySourceTest
Bug: 264812908
Change-Id: I5da1c20d65b879751bdd615c14c2f8a71cc54d80
Change to use FingerprintSetting as base activity when use launch
"Fingerprint Unlock" from Settings -> Security. And then we can prevent
that necesssary pop-up activites become full-screen.
Bug: 232874879
Test: manual test following cases on fp-only devices, and enable don't
keep activity and test them again.
1. fp enrollment on SUW
2. fp add another on SUW
3. add first fp on Security Settings
4. add another fp on Security Settings
Test: atest FingerprintStatusUtilsTest BiometricsSafetySourceTest
Test: robo test for SetupFingerprintEnrollFindSensorTest
SetupFingerprintEnrollFinishTest
FingerprintEnrollFindSensorTest FingerprintEnrollEnrollingTest
Change-Id: Ib1c2ef9f93fb910eed2930f871c0c69bdb94bcbd
