Fade out the taskbar icons when animating to overview in 3 button nav.

Bug: 231213105
Test: from home, opened recents, then went back home, then went back to recents, resumed an app, then went back to recents and resumed the same app (both in 3-button and gesture nav)

Change-Id: I83b1b33cafb95353f36a126b93fcaf3b536d3bf4
diff --git a/src/com/android/launcher3/LauncherState.java b/src/com/android/launcher3/LauncherState.java
index ea6a919..8b5cdbd 100644
--- a/src/com/android/launcher3/LauncherState.java
+++ b/src/com/android/launcher3/LauncherState.java
@@ -208,14 +208,18 @@
         return (getVisibleElements(launcher) & elements) == elements;
     }
 
-    /** Returns whether taskbar is stashed and thus should replace hotseat with a handle */
+    /**
+     * Returns whether taskbar is stashed and thus should either:
+     * 1) replace hotseat or taskbar icons with a handle in gesture navigation mode or
+     * 2) fade out the hotseat or taskbar icons in 3-button navigation mode.
+     */
     public boolean isTaskbarStashed(Launcher launcher) {
         return false;
     }
 
     /** Returns whether taskbar is aligned with the hotseat vs position inside apps */
     public boolean isTaskbarAlignedWithHotseat(Launcher launcher) {
-        return !isTaskbarStashed(launcher);
+        return true;
     }
 
     /**