Enable the settings_controller_loading_enhancement

- Enable some settings pages to use paralleled loading approach.

Bug: 137558156
Test: compilation
Change-Id: I7302de2413c14a7573adf2f9949ac28866557e2f
diff --git a/core/java/android/util/FeatureFlagUtils.java b/core/java/android/util/FeatureFlagUtils.java
index cd20b35..6c619bb1 100644
--- a/core/java/android/util/FeatureFlagUtils.java
+++ b/core/java/android/util/FeatureFlagUtils.java
@@ -62,7 +62,7 @@
         DEFAULT_FLAGS.put("settings_wifi_details_datausage_header", "false");
         DEFAULT_FLAGS.put("settings_skip_direction_mutable", "true");
         DEFAULT_FLAGS.put(SETTINGS_WIFITRACKER2, "true");
-        DEFAULT_FLAGS.put("settings_controller_loading_enhancement", "false");
+        DEFAULT_FLAGS.put("settings_controller_loading_enhancement", "true");
         DEFAULT_FLAGS.put("settings_conditionals", "false");
         // This flags guards a feature introduced in R and will be removed in the next release
         // (b/148367230).