chat: ensure queued messages are always cleared after adding

Mark queued message type as non null because addChatMessage will throw
if it is. This was causing the client to get stuck trying to add the
same broken message each loop.

runelite-client/src/main/java/net/runelite/client/chat/ChatMessageManager.java

@@ -548,8 +548,14 @@ public class ChatMessageManager
 	{
 		if (!queuedMessages.isEmpty())
 		{
-			queuedMessages.forEach(this::add);
-			queuedMessages.clear();
+			try
+			{
+				queuedMessages.forEach(this::add);
+			}
+			finally
+			{
+				queuedMessages.clear();
+			}
 		}
 	}
 

runelite-client/src/main/java/net/runelite/client/chat/QueuedMessage.java

@@ -26,12 +26,14 @@ package net.runelite.client.chat;
 
 import lombok.Builder;
 import lombok.Data;
+import lombok.NonNull;
 import net.runelite.api.ChatMessageType;
 
 @Data
 @Builder
 public class QueuedMessage
 {
+	@NonNull
 	private final ChatMessageType type;
 	private final String value;
 	private String name;