[Toast] Add a feature flag for result launch animations.

Bug: 250588519
Test: manual
Change-Id: I6d605bf8b1008a3b12497e1d04601735ad79c001
diff --git a/src/com/android/launcher3/config/FeatureFlags.java b/src/com/android/launcher3/config/FeatureFlags.java
index 082f6a1..e12110c 100644
--- a/src/com/android/launcher3/config/FeatureFlags.java
+++ b/src/com/android/launcher3/config/FeatureFlags.java
@@ -273,6 +273,10 @@
             "ENABLE_SEARCH_RESULT_BACKGROUND_DRAWABLES", false,
             "Enable option to replace decorator-based search result backgrounds with drawables");
 
+    public static final BooleanFlag ENABLE_SEARCH_RESULT_LAUNCH_TRANSITION = new DeviceFlag(
+            "ENABLE_SEARCH_RESULT_LAUNCH_TRANSITION", false,
+            "Enable option to launch search results using the new standardized transitions");
+
     public static final BooleanFlag TWO_PREDICTED_ROWS_ALL_APPS_SEARCH = new DeviceFlag(
             "TWO_PREDICTED_ROWS_ALL_APPS_SEARCH", false,
             "Use 2 rows of app predictions in All Apps search zero-state");