Fix one case where recents is sometimes not visible

Bug: 7299653

Author: mikejurka

packages/SystemUI/src/com/android/systemui/recent/RecentsActivity.java

@@ -205,4 +205,8 @@ private void handleIntent(Intent intent) {
     boolean isForeground() {
         return mForeground;
     }
+
+    boolean isActivityShowing() {
+         return mShowing;
+    }
 }

packages/SystemUI/src/com/android/systemui/recent/RecentsPanelView.java

@@ -579,7 +579,7 @@ public void onTasksLoaded(ArrayList<TaskDescription> tasks, boolean firstScreenf
         } else {
             mRecentTaskDescriptions.addAll(tasks);
         }
-        if (((RecentsActivity)mContext).isForeground()) {
+        if (((RecentsActivity) mContext).isActivityShowing()) {
             refreshViews();
         }
     }