judge: login state check

packages/hydrooj/package.json

@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "2.33.1",
+    "version": "2.33.2",
     "bin": "bin/hydrooj.js",
     "main": "src/loader",
     "module": "src/loader",

packages/hydrooj/src/handler/judge.ts

@@ -106,6 +106,10 @@ export async function end(body: JudgeResultBody) {
 }
 
 export class JudgeFilesDownloadHandler extends Handler {
+    async get() {
+        this.response.body = 'ok';
+    }
+
     noCheckPermView = true;
     @post('files', Types.Set)
     @post('pid', Types.UnsignedInt)