Enable overlay for all fully visible tasks

Fix: 238310277
Test: In tablet, all fully visible tasks have overlay enabled
Test: In handheld, only current and not adjacent tasks have overlay enabled
Test: No overlay in groupedTaskView
Change-Id: I59b8bebc4e701d3042217f9af222db0b5337ea16

quickstep/src/com/android/quickstep/views/RecentsView.java

@@ -4873,10 +4873,10 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
     }
 
     private void updateEnabledOverlays() {
-        int overlayEnabledPage = mOverlayEnabled ? getNextPage() : -1;
         int taskCount = getTaskViewCount();
         for (int i = 0; i < taskCount; i++) {
-            requireTaskViewAt(i).setOverlayEnabled(i == overlayEnabledPage);
+            TaskView taskView = requireTaskViewAt(i);
+            taskView.setOverlayEnabled(mOverlayEnabled && isTaskViewFullyVisible(taskView));
         }
     }