Bug fix: support tab doesn't show offline UI initially.

Bug: 29601818

The support UI correctly monitors network state change after being
displayed, but it fails to set initial hasInternet flag. So we
manually refresh this flag as part of onResume.

Change-Id: Icbf3cca708a961390073cfa77ec08bec7dd4d82f

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

@@ -117,6 +117,7 @@ public final class SupportFragment extends InstrumentedFragment implements View.
                         .addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
                         .build(),
                 mNetworkCallback);
+        mSupportItemAdapter.setHasInternet(hasInternet());
     }
 
     @Override