Update strings for summary in device unlock page

Bug: 370940762
Test: atest FaceStatusUtilsTest
            FingerprintStatusUtilsTest
            ScreenLockPreferenceDetailsUtilsTest
	    FaceSafetySourceTest
	    FingerprintSafetySourceTest
	    FaceStatusPreferenceControllerTest
	    FingerprintStatusPreferenceControllerTest
Flag: com.android.settings.flags.biometrics_onboarding_education
Change-Id: I0927529e939a8e16ddf6692adc8ad427bdbe1bca