fix：loading加载时机

src/pages/Chat/components/ChatItem/ChatAnswerBox.tsx

@@ -99,8 +99,8 @@ export const ChatAnswerBox: React.FC<ChatAnswerBoxProps> = ({ record, showIndex,
                   style={{ background: '#F7FAFD' }}
                   className="rounded-[20px] box-border px-[16px] py-[12px] sm:px-[24px] sm:py-[20px] relative flex-1 min-w-0"
                 >
-                  {item.answer?.length || item.cardList?.length
-? (
+                  {(item.answer != null && item.answer !== '') || (Array.isArray(item.cardList) && item.cardList.length > 0)
+                    ? (
                     <div className="content">
                       {item.isShow && (
                         <ChatAnswerShower