Fix crash due to traffic light face Lottie animation

Load the animation asset only if enabled in the resource config, to
avoid crashing on unsupported device configurations.

Test: Manual

Fixes: 189290180
Change-Id: Iae46c735277777705c1d6f4595b557e4b0b1aef7
(cherry picked from commit adf0cabe0a)

res/layout/face_enroll_education.xml

@@ -47,6 +47,7 @@
                 android:layout_height="wrap_content"
                 app:sudVideo="@raw/face_education"/>
 
+            <!-- Animation res MUST be set in code, gated by config_face_education_use_lottie. -->
             <com.airbnb.lottie.LottieAnimationView
                 android:id="@+id/illustration_lottie"
                 android:layout_width="match_parent"
@@ -54,8 +55,7 @@
                 android:scaleType="fitCenter"
                 android:visibility="invisible"
                 app:lottie_autoPlay="true"
-                app:lottie_loop="true"
-                app:lottie_rawRes="@raw/face_education_lottie" />
+                app:lottie_loop="true" />
 
             <ImageView
                 android:id="@+id/illustration_accessibility"

src/com/android/settings/biometrics/face/FaceEnrollEducation.java

@@ -112,6 +112,7 @@ public class FaceEnrollEducation extends BiometricEnrollBase {
         if (mIsUsingLottie) {
             mIllustrationDefault.stop();
             mIllustrationDefault.setVisibility(View.INVISIBLE);
+            mIllustrationLottie.setAnimation(R.raw.face_education_lottie);
             mIllustrationLottie.setVisibility(View.VISIBLE);
             mIllustrationLottie.playAnimation();
         }