fixed NPE while initializing controllers by commenting out the failure

one for temporal fix

Added @Nullable in parameters of buildPreferenceControllers() to prevent using nullable parameter to functions requires non-nullable.

Bug: 315330037
Test: see developer options preferences show/hide based on the
controllers isAvailable()

Change-Id: If42faea900a2220d9b1f5e38e1befbd5a555e78a

src/com/android/settings/search/BaseSearchIndexProvider.java

@@ -136,7 +136,7 @@ public class BaseSearchIndexProvider implements Indexable.SearchIndexProvider {
         try {
             controllersFromCode = createPreferenceControllers(context);
         } catch (Exception e) {
-            Log.w(TAG, "Error initial controller");
+            Log.w(TAG, "Error initializing controller in fragment: " + this + ", e: " + e);
         }
 
         final List<SearchIndexableResource> res = getXmlResourcesToIndex(context, true);