Merge branch 'hotfix/cht-1203-fix-meetings-title' into 'release/v5.0.0'

CHT-1203. Wrong meetings title reported upon onChatListItemUpdate (hotfix for v5.0.0)

See merge request megachat/MEGAchat!1882

src/chatClient.cpp

@@ -4280,7 +4280,7 @@ void GroupChatRoom::syncChatTitle(const mega::MegaTextChat& chat, const bool mem
                              err.what());
             });
     }
-    else if (membersChanged)
+    else if (!mHasTitle && membersChanged)
     {
         KR_LOG_DEBUG("Empty title received for groupchat %s. Peers changed, updating title...",
                      ID_CSTR(mChatid));