chore: increase axios timeout to 30 minutes

--bug=1062162 --user=刘瑞斌 【github#3995】当知识库数据量过大时，导出excel或导出zip会超时报错 https://www.tapd.cn/62980211/s/1778654

ui/src/request/index.ts

@@ -11,7 +11,7 @@ import { ref, type WritableComputedRef } from 'vue'
 const axiosConfig = {
   baseURL: (window.MaxKB?.prefix ? window.MaxKB?.prefix : '/admin') + '/api',
   withCredentials: false,
-  timeout: 600000,
+  timeout: 1800000, // 30分钟 timeout
   headers: {},
 }