Fixed wifi picker active network detection for Passpoint

Determining the active access point at the top of the picker
depended on matching the connection info with a saved configuration.
With Passpoint configs being removed from getConfiguredNetworks, the
matching of Passpoint access points must be done solely through the
current WifiInfo.

Bug: 118705403
Test: atest AccessPointTest

Change-Id: Ia9f5a0d7d7dca26d02a1e747edbf08ecbbec91dd