Sync hotseat/taskbar handoff

+ Do not allow sync during tests

Bug: 223443781
Bug: 202507555
Test: open/close apps in hotseat/taskbar
Change-Id: I2f434d440a26999219e785b8671768e27d0dcad3

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

@@ -191,6 +191,16 @@ public class TaskbarViewController implements TaskbarControllers.LoggableTaskbar
                 + mTaskbarIconTranslationYForStash.value);
     }
 
+    /**
+     * Creates the icon alignment controller if it does not already exist.
+     * @param launcherDp Launcher device profile.
+     */
+    public void createIconAlignmentControllerIfNotExists(DeviceProfile launcherDp) {
+        if (mIconAlignControllerLazy == null) {
+            mIconAlignControllerLazy = createIconAlignmentController(launcherDp);
+        }
+    }
+
     /**
      * Sets the taskbar icon alignment relative to Launcher hotseat icons
      * @param alignmentRatio [0, 1]
@@ -198,9 +208,7 @@ public class TaskbarViewController implements TaskbarControllers.LoggableTaskbar
      *                       1 => fully aligned
      */
     public void setLauncherIconAlignment(float alignmentRatio, DeviceProfile launcherDp) {
-        if (mIconAlignControllerLazy == null) {
-            mIconAlignControllerLazy = createIconAlignmentController(launcherDp);
-        }
+        createIconAlignmentControllerIfNotExists(launcherDp);
         mIconAlignControllerLazy.setPlayFraction(alignmentRatio);
         if (alignmentRatio <= 0 || alignmentRatio >= 1) {
             // Cleanup lazy controller so that it is created again in next animation