conversationmodel: add call notification asap for incoming call

this allow showIncomingCall to be on top as sorted by last interactions

Change-Id: I5f9e9dc1f9f187be406112385a4196b957613163

src/conversationmodel.cpp

@@ -1903,9 +1903,10 @@ ConversationModelPimpl::slotIncomingCall(const QString& fromId, const QString& c
     }
 
     auto& conversation = conversations.at(conversationIdx);
-
     qDebug() << "Add call to conversation with " << fromId;
     conversation.callId = callId;
+
+    addOrUpdateCallMessage(callId, fromId);
     invalidateModel();
     emit behaviorController.showIncomingCallView(linked.owner.id, conversation.uid);
 }