chore: eslint add sonar (#17989)

web/app/components/base/chat/chat/index.tsx

@@ -196,7 +196,8 @@ const Chat: FC<ChatProps> = ({
     const chatContainer = chatContainerRef.current
     if (chatContainer) {
       const setUserScrolled = () => {
-        if (chatContainer)
+        // eslint-disable-next-line sonarjs/no-gratuitous-expressions
+        if (chatContainer) // its in event callback, chatContainer may be null
           userScrolledRef.current = chatContainer.scrollHeight - chatContainer.scrollTop > chatContainer.clientHeight
       }
       chatContainer.addEventListener('scroll', setUserScrolled)