Set categories to the adapter if suggestion is not available.

If there's no suggestion, we should set the category to the adapter
before returning.

Bug: none
Test: robotests
Change-Id: I73bb248d17edb3c398a9fb0a8f3913e7233fcc0b

src/com/android/settings/dashboard/DashboardSummary.java

@@ -268,6 +268,7 @@ public class DashboardSummary extends InstrumentedFragment
         mSummaryLoader.updateSummaryToCache(category);
         mStagingCategory = category;
         if (mSuggestionControllerMixin == null) {
+            mAdapter.setCategory(mStagingCategory);
             return;
         }
         if (mSuggestionControllerMixin.isSuggestionLoaded()) {