Handle the case of disconnecting -> active for PTS

In case that a call goes from disconnecting to active and bluetooth
does not have time to realize that the call actually got destroyed,
we can get the telecom in a transition DISCONNECTING -> ACTIVE (or
RINGING etc) which it will not honor.

Bug: b/31159015
Change-Id: Ib2097456bc435810bb82ecdf79110f0bbcb63023