mls4error (#869)

## Description: 
I will implement MLS support for the error messages.
![スクリーンショット 2025-05-25 8 32
29](https://github.com/user-attachments/assets/90ceabe0-e12f-49e4-897a-a452f0949df3)


## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
- [x] I understand that submitting code with bugs that could have been
caught through manual testing blocks releases and new features for all
contributors

resources/lang/ja.json

@@ -392,5 +392,13 @@
     "stop_trade": "貿易を停止",
     "yes": "はい",
     "no": "いいえ"
+  },
+  "error_modal": {
+    "crashed": "ゲームがクラッシュしました！",
+    "paste_discord": "以下の情報をDiscordのバグ報告に貼り付けてください：",
+    "copy_clipboard": "クリップボードにコピー",
+    "copied": "コピーしました！",
+    "failed_copy": "コピーに失敗しました",
+    "desync_notice": "あなたは他のプレイヤーと同期していません。画面に表示される内容が他のプレイヤーと異なる可能性があります。"
   }
 }