refactor(frontend): 优化AI股票分析用户体验

- 在股票检测过程中添加 loading 状态

Author: spark

frontend/src/components/stock.vue

@@ -394,6 +394,7 @@ function aiCheckStock(stock,stockCode){
   data.airesult=""
   data.name=stock
   data.code=stockCode
+  data.loading=true
   modalShow4.value=true
   message.loading("ai检测中...",{
     duration: 0,