Firewalld not detected

Describe the bug
This is the opposite problem I had in #39. I now have firewalld installed and enabled:

$ sudo firewall-cmd --state
running

but pareto doesn't see it:

• [root] Firewall & Sharing: Firewall is configured > [FAIL] Firewall is off

To Reproduce
Steps to reproduce the behavior:

1. Install firewalld and configure it
2. paretosecurity check

Expected behavior

• [root] Firewall & Sharing: Firewall is configured > [OK] Firewall is on

Version

$ paretosecurity -v
paretosecurity version 0.3.11

Additional context

  "os": {
    "type": "linux",
    "family": "debian",
    "platform": "ubuntu",
    "name": "Ubuntu",
    "version": "24.04.3 LTS (Noble Numbat)",
    "major": 24,
    "minor": 4,
    "patch": 3,
    "codename": "noble"
  },