[FEATURE]: Add the labels for issue notification.

### Feature and its Use Cases

We need label with this notification.

### Additional Context

_No response_

### Code of Conduct

- [x] I have joined the [Discord server](https://discord.gg/hjUhu33uAn) and will post updates there
- [x] I have searched existing issues to avoid duplicates

Start by locating the existing issue-notification flow and tracing where its Discord message is assembled. Compare the requested label information with the attached example, then identify the relevant tests or add coverage for the notification output. Done means the notification includes the requested issue labels and the tests pass.

由索引模型根据 Issue 内容生成。