Flicker in Fingerprint Enrollment

Fixes: 259707991
Test: m RunSettingsRoboTests -j30 ROBOTEST_FILTER=MessageDisplayControllerTest
Change-Id: I2581dfcc7054c5df1368d5d912dbbc4c8ea01f23

src/com/android/settings/biometrics/fingerprint/FingerprintEnrollEnrolling.java

@@ -352,8 +352,8 @@ public class FingerprintEnrollEnrolling extends BiometricsEnrollEnrolling {
 
     @Override
     protected BiometricEnrollSidecar getSidecar() {
-        final FingerprintEnrollSidecar sidecar = new FingerprintEnrollSidecar();
-        sidecar.setEnrollReason(FingerprintManager.ENROLL_ENROLL);
+        final FingerprintEnrollSidecar sidecar = new FingerprintEnrollSidecar(this,
+                FingerprintManager.ENROLL_ENROLL);
         return sidecar;
     }