focusTransitionScaleAndDimOut should always go from 1f to 0f

- Also updated AnimatedFloat to accept a Consumer<Float>, so a lambda can be used as updateCallback with refernce to udpated value
- Also updated PendingAnimation to accept Animator with TimedInterpolator without specifying SpringProperty

Fix: 352195519
Test: manual
Flag: EXEMPT bugfix
Change-Id: Ifb78c1bcd3ca215a5d214f986a107d0988bff13b

src/com/android/launcher3/anim/PendingAnimation.java

@@ -59,6 +59,13 @@ public class PendingAnimation extends AnimatedPropertySetter {
         add(anim, springProperty);
     }
 
+    /**
+     * Utility method to sent an interpolator on an animation and add it to the list
+     */
+    public void add(Animator anim, TimeInterpolator interpolator) {
+        add(anim, interpolator, SpringProperty.DEFAULT);
+    }
+
     @Override
     public void add(Animator anim) {
         add(anim, SpringProperty.DEFAULT);