Fix Passpoint network details privacy and ssid

Allow changing the privacy setting for Passpoint networks, which are
considered subscriptions but not saved networks. Also use getSsid() for
the SSID pref.

Bug: 70983952
Test: manual build and visual verification
Change-Id: I8a4309421b28bccaf2bd62a23dca8cef133d5af1
2 files changed