IMS-VT: Fix issues with hide me during pseudo dsda use case

Fix issue of wrongly disabling hideme when adding a new MO VT
call. Since phoneid is not updated immediately when a dialing
call is created, hideme mode is disabled momentarily. Avoid
changing the hideme mode when phoneid is invalid.

CRs-Fixed: 2964077
Change-Id: I539cd83cca9a3c8553bb32fe997cee8a094e74b4
1 file changed