fix(admin): 修复授权照片代理未解包全局响应拦截器的问题

authorization-service 全局拦截器将响应包装为 {success, data, timestamp}，
代理服务需要从 response.data.data 取实际数据，而非 response.data。

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/services/admin-service/src/authorization/authorization-proxy.service.ts

@@ -77,7 +77,10 @@ export class AuthorizationProxyService {
       const url = `/api/v1/authorization/self-apply-photos?${queryParams.toString()}`;
       this.logger.debug(`[getSelfApplyPhotos] 请求: ${url}`);
       const response = await this.httpClient.get(url);
-      const data = response.data;
+      // authorization-service 全局拦截器将响应包装为 {success, data, timestamp}
+      // 实际数据在 response.data.data 中
+      const raw = response.data;
+      const data = raw?.data ?? raw;
 
       if (!data?.items?.length) {
         return { items: [], total: data?.total ?? 0, page, limit };