Use tempTradingPeerNodeAddress if the trade doesn't have a trading pe…

…er set yet

This should fix the errors on the maker side when there's a disagreement
about market price.

Fixes bisq-network#2910
Fixes bisq-network#2924

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

@@ -198,7 +198,9 @@ private void sendAckMessage(@Nullable TradeMessage tradeMessage, boolean result,
                 tradeId,
                 result,
                 errorMessage);
-        final NodeAddress peersNodeAddress = trade.getTradingPeerNodeAddress();
+        // If there was an error during offer verification, the tradingPeerNodeAddress of the trade might not be set yet.
+        // We can find the peer's node address in the processModel's tempTradingPeerNodeAddress in that case.
+        final NodeAddress peersNodeAddress = trade.getTradingPeerNodeAddress() != null ? trade.getTradingPeerNodeAddress() : processModel.getTempTradingPeerNodeAddress();
         log.info("Send AckMessage for {} to peer {}. tradeId={}, sourceUid={}",
                 ackMessage.getSourceMsgClassName(), peersNodeAddress, tradeId, sourceUid);
         String finalSourceUid = sourceUid;