Add resetScan parameter to cancelEmergencyNetworkScan

It indicates the way how the next triggerEmergencyNetworkScan shall work.
If true, modem will start the new scan from the beginning.
Otherwise, it will proceed as an existing search.

Test: build
Bug: 243344927
Change-Id: Idaaf637b57b6a1d3fbf479c063277119961fa606