Add metrics for biometric onboarding & education

Log the stats for the new changed buttons

Bug: 370940762
Test: atest FaceSettingsAppsPreferenceControllerTest
            FaceSettingsKeyguardUnlockPreferenceControllerTest
	    FingerprintSettingsAppsPreferenceControllerTest
	    FingerprintSettingsKeyguardUnlockPreferenceControllerTest
Flag: com.android.settings.flags.biometrics_onboarding_education
Change-Id: Ic14ffc43457a71f1f70ace0479410b7449dcc539