Reset allAppsVisible if folding to phone upon recreateTaskbar.

For taskbar unification, we should reset this bit to false when folding
into phone orientation. Otherwise, we will reinit Taskbar AllApps over
the phone UI which is unexpected behavior.

Test: Manual
Flag: N/A
Fix: 293379641
Change-Id: I53c38c8b4df477191be3c21b7750c55a71c7336f

quickstep/src/com/android/launcher3/taskbar/TaskbarManager.java

@@ -443,7 +443,8 @@ public class TaskbarManager {
                 LauncherAppState.getIDP(mContext).getDeviceProfile(mContext) : null;
 
             // All Apps action is unrelated to navbar unification, so we only need to check DP.
-            mAllAppsActionManager.setTaskbarPresent(dp != null && dp.isTaskbarPresent);
+            final boolean isLargeScreenTaskbar = dp != null && dp.isTaskbarPresent;
+            mAllAppsActionManager.setTaskbarPresent(isLargeScreenTaskbar);
 
             destroyExistingTaskbar();
 
@@ -467,6 +468,7 @@ public class TaskbarManager {
             }
             mSharedState.startTaskbarVariantIsTransient =
                     DisplayController.isTransientTaskbar(mTaskbarActivityContext);
+            mSharedState.allAppsVisible = mSharedState.allAppsVisible && isLargeScreenTaskbar;
             mTaskbarActivityContext.init(mSharedState);
 
             if (mActivity != null) {