`-host-name -`的行为与原版不一致

如题
例如
```
server-https 2400:3200::1 -tls-host-verify dns.alidns.com -http-host dns.alidns.com -host-name -
```
依然会发sni`dns.alidns.com`，原版不会
原版的文档：

<img width="1210" height="757" alt="Image" src="https://github.com/user-attachments/assets/ebf09e82-ec39-436e-a023-d7dd27d8d389" />