Connect to OWE Wi-Fi network when QR code has no password

- Since there is no password for Wi-Fi security in OPEN and OWE, try to connect to one of them

Bug: 360377330
Flag: EXEMPT bugfix
Test: Manual testing
atest -c WifiDppQrCodeScannerFragmentTest

Change-Id: Ia0a59e099b724170ad993df8b4246b94e0da392c