fix: log detail panel not showing any message when total count greate… (#10119)

web/app/components/base/chat/utils.ts

@@ -134,6 +134,12 @@ function buildChatItemTree(allMessages: IChatItem[]): ChatItemInTree[] {
     }
   }
 
+  // If no messages have parentMessageId=null (indicating a root node),
+  // then we likely have a partial chat history. In this case,
+  // use the first available message as the root node.
+  if (rootNodes.length === 0 && allMessages.length > 0)
+    rootNodes.push(map[allMessages[0]!.id]!)
+
   return rootNodes
 }