WifiNetworkFactory: Send flag for singe network request

Send a new boolean flag to let the UI know that the app's request can
only match a single network. This lets the UI trigger a different user
flow for single network requests from apps.

Bug: 128563203
Test: ./frameworks/opt/net/wifi/tests/wifitests/runtests.sh
Change-Id: I2b92b5b015dbdffb628aeae0b88351ed79ad42e8
2 files changed