fix: 修复 Chrome 90 智能体文档上传失败

- 复用兼容 UUID 生成逻辑，移除对 crypto.randomUUID 的依赖

- 补充旧浏览器缺失 randomUUID 时的上传回归测试

easyflow-ui-admin/pnpm-lock.yaml

@@ -1441,6 +1441,9 @@ importers:
       '@easyflow/types':
         specifier: workspace:*
         version: link:../../types
+      '@easyflow/utils':
+        specifier: workspace:*
+        version: link:../../utils
       '@incremark/theme':
         specifier: 1.0.2
         version: 1.0.2