Call StatusBar#finishKeyguardFadingAway after the fling animation.

This isn't currently isn't being called with the new keyguard unlock animation if bypassing the keyguard due to biometric unlock. This results in ScrimController#expansionAffectsAlpha remaining false after an unlock, which in turn results in a transparent shade scrim even when unlocked+expanded.

Filed b/186873982 to track a permanent fix (for a safer fix-forward, I am checking if the new unlock animation is running before calling #finishKeyguardFadingAway, but that's likely not necessary).

Bug: 186760125
Test: manual
Change-Id: I79a70034a02af45d69dc0e80554141c65f6b5ed8

packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarKeyguardViewManager.java

@@ -591,6 +591,8 @@ public class StatusBarKeyguardViewManager implements RemoteInputController.Callb
 
         if (mStatusBar.isInLaunchTransition()
                 || mKeyguardStateController.isFlingingToDismissKeyguard()) {
+            final boolean wasFlingingToDismissKeyguard =
+                    mKeyguardStateController.isFlingingToDismissKeyguard();
             mStatusBar.fadeKeyguardAfterLaunchTransition(new Runnable() {
                 @Override
                 public void run() {
@@ -604,6 +606,11 @@ public class StatusBarKeyguardViewManager implements RemoteInputController.Callb
                 public void run() {
                     mStatusBar.hideKeyguard();
                     mNotificationShadeWindowController.setKeyguardFadingAway(false);
+
+                    if (wasFlingingToDismissKeyguard) {
+                        mStatusBar.finishKeyguardFadingAway();
+                    }
+
                     mViewMediatorCallback.keyguardGone();
                     executeAfterKeyguardGoneAction();
                 }