Convert the fail cause to DisconnectCause.CALL_BARRED

DisconnectCause.CALL_BARRED is notified to TeleService when CS call 
fails due to call barring. But it isn't notified in case of IMS call.

To fix this, add a case that converts the fail cause to
DisconnectCause.CALL_BARRED.

Test: manual - Checked that DisconnectCause.CALL_BARRED is notified
when call is barred.
Bug: 70369741

Change-Id: I78d59e320d39a47c2c4f778583121c98650e2f2f
1 file changed