DO NOT MERGE 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
(cherry picked from commit bef2be6)
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:2e640447d16c4e893927e2f76bda8b1073bb18f8)
Merged-In: I2bfdc7801cec1b3aaa44f841d8a821214c6cb801
Change-Id: I2bfdc7801cec1b3aaa44f841d8a821214c6cb801

Author: Shawn Lee

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

@@ -2843,6 +2843,7 @@ public void setHeadsUpAnimatingAway(boolean headsUpAnimatingAway) {
     /** Set whether the bouncer is showing. */
     public void setBouncerShowing(boolean bouncerShowing) {
         mBouncerShowing = bouncerShowing;
+        mNotificationStackScrollLayoutController.updateShowEmptyShadeView();
         updateVisibility();
     }
 

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

@@ -1240,7 +1240,8 @@ public void updateShowEmptyShadeView() {
                 // 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());