invitations: fix synchronization state

This patch fix issue when received non one to one swarm invitation
and it appears in synchronization state before being accepted.

Change-Id: Icbb9ab79f9dff85ececb7d0861ab2dc8dd8017dd
diff --git a/Ring/Ring/Services/RequestsService.swift b/Ring/Ring/Services/RequestsService.swift
index 76e3a32..6dbce08 100644
--- a/Ring/Ring/Services/RequestsService.swift
+++ b/Ring/Ring/Services/RequestsService.swift
@@ -391,10 +391,10 @@
             } else { return }
         }
         /**
-         if it conversation with one participant check profile.
+         if it is a core dialog check profile.
          If profile exists it means we already accepted request and now request synchronizing.
          */
-        if conversationRequest.isDialog(),
+        if conversationRequest.isCoredialog(),
            let profile = self.getProfile(with: "ring:" + conversationRequest.participants.first!.jamiId, accountId: accountId) {
             if let alias = profile.alias, !alias.isEmpty {
                 conversationRequest.name = alias