judge: fix subtask deps

packages/hydrojudge/package.json

@@ -1,7 +1,7 @@
 {
     "name": "@hydrooj/hydrojudge",
     "bin": "bin/hydrojudge.js",
-    "version": "2.3.8",
+    "version": "2.3.9",
     "main": "package.json",
     "author": "undefined <i@undefined.moe>",
     "repository": "https://github.com/hydro-dev/Hydro.git",

packages/hydrojudge/src/judge/default.ts

@@ -166,7 +166,7 @@ export const judge = async (ctx) => {
     for (const sid in ctx.config.subtasks) {
         let effective = true;
         for (const required of ctx.config.subtasks[sid].if || []) {
-            if (ctx.failed[required]) effective = false;
+            if (ctx.failed[required.toString()]) effective = false;
         }
         if (effective) ctx.total_score += scores[sid];
     }