Hanlde NPE when context from default phone is null.

Bug: 253630907
Test: Maunal test
Test: atest pass
Change-Id: I577a78d70428e8f438e02115586e5de49d415019

core/java/com/android/internal/app/LocalePicker.java

@@ -100,6 +100,9 @@ public class LocalePicker extends ListFragment {
     }
 
     public static String[] getSupportedLocales(Context context) {
+        if (context == null) {
+            return new String[0];
+        }
         String[] allLocales = context.getResources().getStringArray(R.array.supported_locales);
 
         Predicate<String> localeFilter = getLocaleFilter();