[Wi-Fi] Edit a never connected WifiEntryPreference in WifiSettings2

If the Wi-Fi network is never connected after it's saved,
edit it instead of connecting when users click the WifiEntryPreference.

Bug: 143328194
Test: manual
      Click a saved wrong password Wi-Fi network

Change-Id: If974ce9225fe6b6ed5f8a3c6c0ff619532acc1c2