Fix failing test TaplTaskbarTest#testHideShowTaskbar

Closing the Taskbar all apps page doesn't automatically close any open popup menus. This lead to the popup menu opened in TaplTaskbarTests#testOpenMenu_FromTaskbarAllApps remaining open after going home in setUp (before running TaplTaskbarTest#testHideShowTaskbar). The the workspace is not visible to the tests while the popup menu is open, so this test would consistenly fail.

Bug: 215218813
Fixes: 224597087
Test: Ran tests locally and remotely
Change-Id: I81d8eb1e99a264611749eb3c508f707988c0fcb1
diff --git a/quickstep/src/com/android/launcher3/taskbar/allapps/TaskbarAllAppsViewController.java b/quickstep/src/com/android/launcher3/taskbar/allapps/TaskbarAllAppsViewController.java
index 4597422..32ebbe8 100644
--- a/quickstep/src/com/android/launcher3/taskbar/allapps/TaskbarAllAppsViewController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/allapps/TaskbarAllAppsViewController.java
@@ -20,6 +20,7 @@
 import static com.android.launcher3.taskbar.allapps.TaskbarAllAppsSlideInView.DEFAULT_OPEN_DURATION;
 import static com.android.launcher3.util.OnboardingPrefs.ALL_APPS_VISITED_COUNT;
 
+import com.android.launcher3.AbstractFloatingView;
 import com.android.launcher3.appprediction.AppsDividerView;
 import com.android.launcher3.appprediction.PredictionRowView;
 import com.android.launcher3.taskbar.TaskbarStashController;
@@ -83,6 +84,8 @@
         mTaskbarStashController.updateStateForFlag(FLAG_STASHED_IN_APP_ALL_APPS, true);
         mTaskbarStashController.applyState(DEFAULT_OPEN_DURATION);
         mSlideInView.setOnCloseBeginListener(() -> {
+            AbstractFloatingView.closeOpenContainer(
+                    mContext, AbstractFloatingView.TYPE_ACTION_POPUP);
             mTaskbarStashController.updateStateForFlag(
                     FLAG_STASHED_IN_APP_ALL_APPS, false);
             mTaskbarStashController.applyState(DEFAULT_CLOSE_DURATION);