Fix Wi-Fi details crash in secondary users

- When Wi-Fi details are restricted for secondary users, UI components will be removed to prevent user interaction
  - The UI update function may not obtain the expected resources, causing NPE issues

Bug: 362151753
Flag: EXEMPT bugfix
Test: Manual testing
atest -c WifiNetworkDetailsFragmentTest

Change-Id: Ia97b4e202faff85ced0b6eaf2e4b4f0dc04b5cef

src/com/android/settings/wifi/details/WifiNetworkDetailsFragment.java

@@ -400,6 +400,9 @@ public class WifiNetworkDetailsFragment extends RestrictedDashboardFragment impl
 
     @VisibleForTesting
     void onHotspotNetworkChanged(WifiNetworkDetailsViewModel.HotspotNetworkData data) {
+        if (mIsUiRestricted) {
+            return;
+        }
         PreferenceScreen screen = getPreferenceScreen();
         if (screen == null) {
             return;