ui: 还原momentjs

packages/ui-default/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@hydrooj/ui-default",
-  "version": "4.11.14",
+  "version": "4.11.15",
   "author": "undefined <i@undefined.moe>",
   "license": "AGPL-3.0",
   "main": "hydro.js",
@@ -66,6 +66,7 @@
     "jquery.easing": "^1.4.1",
     "jquery.transit": "^0.9.12",
     "mini-css-extract-plugin": "^1.6.0",
+    "moment": "^2.29.1",
     "monaco-editor": "^0.24.0",
     "monaco-editor-webpack-plugin": "^3.1.0",
     "nanoid": "^3.1.23",