conversation: prevent clearing interaction cache for certain conversations

Change-Id: I65907e052015efeef066d6262e6f179a4e4a1644

src/conversationmodel.cpp

@@ -1333,12 +1333,14 @@ ConversationModel::clearInteractionsCache(const QString& convId)
 
     try {
         auto& conversation = pimpl_->conversations.at(conversationIdx);
+        if (!conversation.isRequest && !conversation.needsSyncing && conversation.isSwarm()) {
             {
                 std::lock_guard<std::mutex> lk(pimpl_->interactionsLocks[convId]);
                 conversation.interactions->clear(1);
             }
             conversation.allMessagesLoaded = false;
             conversation.lastMessageUid = conversation.interactions->last().first;
+        }
     } catch (const std::out_of_range& e) {
         qDebug() << "can't find interaction from conversation: " << e.what();
         return;