[Wi-Fi] Apply WifiEntry onUpdate to support refresh WiFi detail page for OpenRoaming feature.

Issue: The preference UIs status didn't chage dynamically.
Solution: update the preference UI status when onUpdated is called.

Bug: 146669261
Test: 1.manually mofidy framework to test.
      2.The getAvailabilityStatus() already tested in
      WifiSubscriptionDetailPreferenceController2Test.
Change-Id: I51b5e67df7998d7d3e9ede9ead7aa49ad574c7a3

src/com/android/settings/wifi/details2/WifiDetailPreferenceController2.java

@@ -967,6 +967,9 @@ public class WifiDetailPreferenceController2 extends AbstractPreferenceControlle
     @Override
     public void onUpdated() {
         refreshPage();
+
+        // Refresh the Preferences in fragment.
+        ((WifiNetworkDetailsFragment2) mFragment).refreshPreferences();
     }
 
     /**