Use MultiValueAlpha in ClearAllButton

Bug: 389209338
Flag: EXEMPT refactor
Test: m
Change-Id: Ia6f3f9059444161829c76373b80b354a155fd69d

quickstep/src/com/android/quickstep/views/RecentsView.java

@@ -66,7 +66,6 @@ import static com.android.launcher3.util.SystemUiController.UI_STATE_FULLSCREEN_
 import static com.android.quickstep.BaseContainerInterface.getTaskDimension;
 import static com.android.quickstep.TaskUtils.checkCurrentOrManagedUserId;
 import static com.android.quickstep.util.LogUtils.splitFailureMessage;
-import static com.android.quickstep.views.ClearAllButton.DISMISS_ALPHA;
 import static com.android.quickstep.views.OverviewActionsView.HIDDEN_ACTIONS_IN_MENU;
 import static com.android.quickstep.views.OverviewActionsView.HIDDEN_DESKTOP;
 import static com.android.quickstep.views.OverviewActionsView.HIDDEN_NON_ZERO_ROTATION;
@@ -3962,7 +3961,8 @@ public abstract class RecentsView<
 
                 // Change alpha of clear all if translating grid to hide it
                 if (isClearAllHidden) {
-                    anim.setFloat(mClearAllButton, DISMISS_ALPHA, 0, LINEAR);
+                    anim.setFloat(mClearAllButton.dismissAlphaProperty, MULTI_PROPERTY_VALUE, 0,
+                            LINEAR);
                     anim.addListener(new AnimatorListenerAdapter() {
                         @Override
                         public void onAnimationEnd(Animator animation) {