无法关闭x11

有些主机不支持x11，我在session设置里面关闭x11（但default session设置里面是打开x11），但是没用，没有成功写入配置文件，需要在 `.wind\profiles\default.v10\terminal\user.sessions` 里面手动写入

```json
{
// ...
"ssh.x11" : false
// ...
}
```

Reproduce the issue by disabling X11 in the session settings while the default session keeps it enabled. Inspect `.wind\profiles\default.v10\terminal\user.sessions` and compare the result with the manual `"ssh.x11": false` entry. Done means the setting is written automatically and X11 remains disabled when the session is reopened.

Written by the indexing model from the issue text.