Fix optional chaining in tool.js

Author: amychisholm03

lib/subscribers/langchain/tool.js

@@ -63,8 +63,8 @@ class LangchainToolSubscriber extends AiMonitoringSubscriber {
       agent,
       description,
       toolName: name,
-      aiAgentName: params?.configurable?.__pregel_scratchpad?.currentTaskInput?.messages?.[1]?.name,
-      runId: segment[langchainRunId] ?? params?.toolCall?.id,
+      aiAgentName: params.configurable?.__pregel_scratchpad?.currentTaskInput?.messages?.[1]?.name,
+      runId: segment[langchainRunId] ?? params.toolCall?.id,
       metadata,
       transaction,
       tags,