websocket断开不要立即提示错误，等20或30秒后，还是断开的才提示用户

src/store/modules/websocket.js

@@ -46,7 +46,11 @@ const useWebsoctStore = defineStore('websoct', {
 
       this.socket.addEventListener("close", () => {
         // console.log("WebSocket连接已关闭")
-        ElMessage({ message: "WebSocket重连失败,请尝试刷新界面", type: "error" });
+        setTimeout(() => {
+          if (this.socket.readyState === WebSocket.CLOSED) {
+            ElMessage({ message: "WebSocket重连失败,请尝试刷新界面", type: "error" });
+          }
+        },20000)
         this.reconnect(url);  //尝试重新连接
         clearInterval(heartTimer)
       })