Set the default for keyboard sync to IS_STUDIO_BUILD.

As discussed offline, I will send out an announcement in the Sysui-studio and #sysui-debug Chat Spaces to solicit bug reports.

Bug: 234812580
Test: manual
Change-Id: Id693e8ebd990b804da247d4639a2dd2d6fbdd01f
diff --git a/src/com/android/launcher3/config/FeatureFlags.java b/src/com/android/launcher3/config/FeatureFlags.java
index f5683d1..e351173 100644
--- a/src/com/android/launcher3/config/FeatureFlags.java
+++ b/src/com/android/launcher3/config/FeatureFlags.java
@@ -266,7 +266,7 @@
             "ENABLE_ONE_SEARCH_MOTION", true, "Enables animations in OneSearch.");
 
     public static final BooleanFlag ENABLE_KEYBOARD_TRANSITION_SYNC = new DeviceFlag(
-            "ENABLE_KEYBOARD_TRANSITION_SYNC", false,
+            "ENABLE_KEYBOARD_TRANSITION_SYNC", IS_STUDIO_BUILD,
             "Enable option to synchronize the keyboard open and close animations when transitioning"
                     + " between home and all apps");