Making UserCache the source of truth for all user events

Bug: 243688989
Test: Presubmit
Flag: N/A
Change-Id: I0e6b853d965eff1abaeb3b26dd6b94424e5212df

src/com/android/launcher3/allapps/ActivityAllAppsContainerView.java

@@ -1100,7 +1100,10 @@ public class ActivityAllAppsContainerView<T extends Context & ActivityContext>
         }
     }
 
-    protected boolean shouldShowTabs() {
+    /**
+     * Returns true if the container has work apps.
+     */
+    public boolean shouldShowTabs() {
         return mHasWorkApps;
     }