Ensure TelecomManager#isIncall returns true when in phone acct selection.

Change TelecomManager#isInCall to return true when a call is in phone acct
selection.  Also modify isInManagedCall to be consistent in which states
it checks.

Test: Unit, manual
Bug: 34469716
Change-Id: If969015b24348d96c74622a2790bd3d742401dc6