Avoid launching details settings after WifiEntry is forgotten

- Don't launch details settings if WifiEntry isn't saved

Bug: 359584817
Flag: EXEMPT bugfix
Test: Manual testing
atest -c NetworkProviderSettingsTest

Change-Id: Iff1c37b64adef6d136d2aaa6a0a946c22af38193

tests/robotests/src/com/android/settings/network/NetworkProviderSettingsTest.java

@@ -872,6 +872,17 @@ public class NetworkProviderSettingsTest {
         verify(mWifiEntry, never()).getKey();
     }
 
+    @Test
+    public void launchNetworkDetailsFragment_wifiEntryIsNotSaved_ignoreWifiEntry() {
+        when(mWifiEntry.isSaved()).thenReturn(false);
+        LongPressWifiEntryPreference preference =
+                mNetworkProviderSettings.createLongPressWifiEntryPreference(mWifiEntry);
+
+        mNetworkProviderSettings.launchNetworkDetailsFragment(preference);
+
+        verify(mWifiEntry, never()).getKey();
+    }
+
     @Implements(PreferenceFragmentCompat.class)
     public static class ShadowPreferenceFragmentCompat {