After copying Chinese, Japanese, or Korean from the terminal, pasting the content into the terminal may result in garbled text.

### Describe the bug

When I copy Chinese, Japanese, or Korean from the terminal, there is a chance that pasting the content directly into the terminal will result in garbled text.

The scope of this bug includes both the model's own responses and the content in the input box.

Copying Chinese character/Kanji from the input box and then pasting it almost 100% results in garbled text.

Pasting the text outside the terminal does not cause any issues, and text copied from outside the terminal almost never encounters this problem.

see this video:

https://github.com/user-attachments/assets/3b5c97d3-2511-468a-b3a5-99ccb68f61c7

### Affected version

GitHub Copilot CLI 1.0.48.

### Steps to reproduce the behavior

1. select some CJK text from terminal, then right-click to copy
2. Paste it by right-click
3. There is high a chance that pasting the content will result in garbled text

### Expected behavior

All text appeared in it's origin content

### Additional context

I'm using Windows Terminal 1.24.11321.0, OS Locale is Simplified Chinese.

レポートにはファイル、テスト、エントリーポイントのいずれも記載されていません。Windows Terminal 上の GitHub Copilot CLI 1.0.48 で、モデルのレスポンスと入力ボックスの両方からコピーした中国語、日本語、または韓国語を使って問題を再現し、その後ターミナルでのコピー／貼り付け処理を追跡してください。テキストが文字化けせずに往復できれば完了です。

索引モデルが issue の本文から書いたものです。