Rename Indexable::getAllPreferenceControllers.

To getPreferenceControllers. "all" is redundant. Then internally, the
old getPreferenceControllers() is renamed to
createPreferenceControllers() to emphasize the controllers are created
from code (versus the ones created from xml).

Bug: 73668763
Test: robotest
Change-Id: Ifec46aefdc2a418031c8e152028b30bdcd396fc7

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

@@ -96,7 +96,7 @@ public class DatabaseIndexingUtils {
         final Indexable.SearchIndexProvider provider = getSearchIndexProvider(clazz);
 
         final List<AbstractPreferenceController> controllers =
-                provider.getAllPreferenceControllers(context);
+                provider.getPreferenceControllers(context);
 
         if (controllers == null) {
             return map;