fix: 更新请求以包含Referer头部，增强locations路径的安全性

Author: cmliu

_worker.js

@@ -301,7 +301,7 @@ export default {
                     return new Response(订阅内容, { status: 200, headers: responseHeaders });
                 }
                 return new Response('无效的订阅TOKEN', { status: 403 });
-            } else if (访问路径 === 'locations') return fetch(new Request('https://speed.cloudflare.com/locations'));
+            } else if (访问路径 === 'locations') return fetch(new Request('https://speed.cloudflare.com/locations', { headers: { 'Referer': 'https://speed.cloudflare.com/' } }));
         } else if (管理员密码) {// ws代理
             await 反代参数获取(request);
             return await 处理WS请求(request, userID);