Attach v2 EnrollingSfpsFragment to activity

1. Attach FingerprintEnrollEnrollingSfpsFragment to
   FingerprintEnrollmentActivity.
2. Refine FinSensor rotation case for SFPS and RFPS

Bug: 260957939
Test: atest FingerprintEnrollmentActivityTest
Change-Id: Ibbeff8deb009271df044480f9f5d6c64ab6e6264

src/com/android/settings/biometrics2/ui/viewmodel/FingerprintEnrollEnrollingViewModel.java

@@ -23,6 +23,8 @@ import android.os.Bundle;
 import android.os.VibrationAttributes;
 import android.os.VibrationEffect;
 import android.util.Log;
+import android.view.View;
+import android.view.accessibility.AccessibilityEvent;
 import android.view.accessibility.AccessibilityManager;
 
 import androidx.annotation.NonNull;
@@ -278,6 +280,23 @@ public class FingerprintEnrollEnrollingViewModel extends AndroidViewModel {
         return mAccessibilityRepository.isEnabled();
     }
 
+    /**
+     * Sends an {@link AccessibilityEvent}.
+     *
+     * @param event The event to send.
+     *
+     * @throws IllegalStateException if accessibility is not enabled.
+     *
+     * <strong>Note:</strong> The preferred mechanism for sending custom accessibility
+     * events is through calling
+     * {@link android.view.ViewParent#requestSendAccessibilityEvent(View, AccessibilityEvent)}
+     * instead of this method to allow predecessors to augment/filter events sent by
+     * their descendants.
+     */
+    public void sendAccessibilityEvent(@NonNull AccessibilityEvent event) {
+        mAccessibilityRepository.sendAccessibilityEvent(event);
+    }
+
     /**
      * Like {@link #vibrate(VibrationEffect, VibrationAttributes)}, but allows the
      * caller to specify the vibration is owned by someone else and set a reason for vibration.