fix: clear firewall rule description (#12491)

#### What this PR does / why we need it?

Refs https://github.com/1Panel-dev/1Panel/issues/12488

#### Summary of your change

#### Please indicate you've done the following:

- [ ] Made sure tests are passing and test coverage is added if needed.
- [ ] Made sure commit message follow the rule of [Conventional Commits specification](https://www.conventionalcommits.org/).
- [ ] Considered the docs impact and opened a new docs issue or PR with docs changes if needed.