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
84b39c3ed0