Add locusId as something taskOrganizers care about

This ensures that a locusId change will trigger an
onTaskInfoChange immediately. Previously it would just
be sent with the next info change event which isn't
sufficient.

Test: atest NotificationManagerTest
Bug: 204260661
Change-Id: I2b53f63b6efd6d2c22a877b7c33f5a12832a8e1d

core/java/android/app/TaskInfo.java

@@ -368,7 +368,8 @@ public class TaskInfo {
                 && Objects.equals(taskDescription, that.taskDescription)
                 && isFocused == that.isFocused
                 && isVisible == that.isVisible
-                && isSleeping == that.isSleeping;
+                && isSleeping == that.isSleeping
+                && Objects.equals(mTopActivityLocusId, that.mTopActivityLocusId);
     }
 
     /**