[client] Allow routing to fallback to exclusion routes if rules are not supported

[lixmal]

Describe your changes

We allow this condition to match:

	rules := getSetupRules()
	for _, rule := range rules {
		if err := addRule(rule); err != nil {
			if errors.Is(err, syscall.EOPNOTSUPP) {
				log.Warnf("Rule operations are not supported, falling back to the legacy routing setup")
				setIsLegacy(true)
				return r.setupRefCounter(initAddresses, stateManager)
			}
			return nil, nil, fmt.Errorf("%s: %w", rule.description, err)
		}
	}

Issue ticket number and link

Checklist

• Is it a bug fix
• Is a typo/documentation fix
• Is a feature enhancement
• It is a refactor
• Created tests that fail without the change (if possible)
• Extended the README / documentation, if necessary

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud