tauri_plugin_dialog: When setting the button to Chinese, it crashes.

Repeat the code:

```rust
app
    .dialog()
    .message("信息")
    .title("提示")
    .kind(MessageDialogKind::Warning)
    .buttons(MessageDialogButtons::OkCancelCustom(
        String::from("确定"),
        String::from("取消"),
    ))
    .blocking_show();
```