skip processing arbitrator's payment received nack (temporary)

Author: woodser

core/src/main/java/haveno/core/trade/protocol/TradeProtocol.java

@@ -879,6 +879,12 @@ private void onAckMessageAux(AckMessage ackMessage, NodeAddress sender) {
 
             // ack message from arbitrator
             else if (peer == trade.getArbitrator()) {
+
+                if (true) {
+                    log.warn("Skipping processing of arbitrator's nack message for PaymentReceivedMessage");
+                    return;
+                }
+
                 trade.getArbitrator().setPaymentReceivedAckMessage(ackMessage);
                 processModel.getTradeManager().persistNow(null);