fix: 修复管理端前端类型校验问题

- 修正知识库与 Bot 设置页相关组件的类型定义和空值处理

- 补齐工作流与公开聊天页的前端类型约束和动态导入类型

- 收敛本次改动文件的局部格式与样式规范，确保 pnpm check:type 通过

easyflow-ui-admin/app/src/views/publicChat/index.vue

@@ -172,12 +172,14 @@ const scrollToBottom = (force = false) => {
   });
 };
 
-const buildRequestHeaders = (token = requestAccessToken.value) =>
+const buildRequestHeaders = (
+  token = requestAccessToken.value,
+): Record<string, string> | undefined =>
   token
     ? {
         'easyflow-token': token,
       }
-    : {};
+    : undefined;
 
 const getResponseBody = async <T,>(request: Promise<any>) => {
   const response = await request;