Pivot search results scale around top of view.

This way views scale in/out relative to the top of the view,
instead of the center. This is most noticeable on larger views,
like Search Edu card.

Before/after videos: https://drive.google.com/drive/folders/1aXMGD44AQBeu6cLyzpV1DcFeh1Q8Vvmk?resourcekey=0-ShsGtgCTcST5cjUPAGPfwg&usp=sharing

Bug: 234882587
Test: Manual with 10x animation duration.
Change-Id: Ifb02f9dcb14e69b9cf3f9dea55d03d155b720391
diff --git a/src/com/android/launcher3/allapps/SearchTransitionController.java b/src/com/android/launcher3/allapps/SearchTransitionController.java
index 03529af..4be715b 100644
--- a/src/com/android/launcher3/allapps/SearchTransitionController.java
+++ b/src/com/android/launcher3/allapps/SearchTransitionController.java
@@ -233,6 +233,7 @@
     private void onSearchChildAttached(View child) {
         // Avoid allocating hardware layers for alpha changes.
         child.forceHasOverlappingRendering(false);
+        child.setPivotY(0);
         if (mSearchToAzProgress > 0) {
             // Before the child is rendered, apply the animation including it to avoid flicker.
             updateSearchRecyclerViewProgress();