Suppress bubble animation when bar is hidden

This change suppresses the new bubble animation when the notification shade is open and when the device is locked.

Flag: ACONFIG com.android.wm.shell.enable_bubble_bar DEVELOPMENT
Fixes: 332912942
Test: manual
     - Use test app to trigger a bubble with delay
     - Lock the device/pull down the notification shade
     - Observe the bubble is not animating
     - Unlock/collapse the shade
     - Observe new bubble was added to the bubble bar
Change-Id: I0b1d42a9d57b29807f113ae45ff60349341272ef

quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarViewController.java

@@ -266,6 +266,11 @@ public class BubbleBarViewController {
         mBarView.setUpdateSelectedBubbleAfterCollapse(updateSelectedBubbleAfterCollapse);
     }
 
+    /** Returns whether the bubble bar should be hidden because of the current sysui state. */
+    boolean isHiddenForSysui() {
+        return mHiddenForSysui;
+    }
+
     /**
      * Sets whether the bubble bar should be hidden due to SysUI state (e.g. on lockscreen).
      */