Fix the test fail of the MenuAnimationControllerTest.

Root cause: looper must not be null

Solution: Added looper into

Fix: 255338428
Test: atest MenuAnimationControllerTest
Change-Id: I54a26f4b93c27a6ea1dd4500e65ccbf371de1aa5

packages/SystemUI/tests/src/com/android/systemui/accessibility/floatingmenu/MenuAnimationControllerTest.java

@@ -20,6 +20,7 @@ import static com.google.common.truth.Truth.assertThat;
 
 import android.graphics.PointF;
 import android.testing.AndroidTestingRunner;
+import android.testing.TestableLooper;
 import android.view.WindowManager;
 
 import androidx.test.filters.SmallTest;
@@ -32,6 +33,7 @@ import org.junit.runner.RunWith;
 
 /** Tests for {@link MenuAnimationController}. */
 @RunWith(AndroidTestingRunner.class)
+@TestableLooper.RunWithLooper(setAsMainLooper = true)
 @SmallTest
 public class MenuAnimationControllerTest extends SysuiTestCase {
     private MenuView mMenuView;