Hide EmptyShadeView when on bouncer

Added a check to make sure EmptyShadeView is hidden when bouncer is showing.

Bug: 267060171
Test: manually verified EmptyShadeView visibility
Change-Id: I2bfdc7801cec1b3aaa44f841d8a821214c6cb801

packages/SystemUI/src/com/android/systemui/shade/NotificationPanelViewController.java

@@ -2809,6 +2809,7 @@ public final class NotificationPanelViewController implements ShadeSurface, Dump
     @Override
     public void setBouncerShowing(boolean bouncerShowing) {
         mBouncerShowing = bouncerShowing;
+        mNotificationStackScrollLayoutController.updateShowEmptyShadeView();
         updateVisibility();
     }
 

packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayoutController.java

@@ -1235,7 +1235,8 @@ public class NotificationStackScrollLayoutController {
                 // Hide empty shade view when in transition to Keyguard.
                 // That avoids "No Notifications" to blink when transitioning to AOD.
                 // For more details, see: b/228790482
-                && !isInTransitionToKeyguard();
+                && !isInTransitionToKeyguard()
+                && !mCentralSurfaces.isBouncerShowing();
 
         mView.updateEmptyShadeView(shouldShow, mZenModeController.areNotificationsHiddenInShade());