fix(firewall): enforce system rules independently of tenant context

Signed-off-by: Sebastian Krupinski <krupinski01@gmail.com>

tests/php/Integration/Stores/FirewallStoreTest.php

@@ -45,7 +45,7 @@ class FirewallStoreTest extends TestCase
         }
     }
 
-    #[TestDox('Applicable rules contain system rules and only the requested tenant rules')]
+    #[TestDox('System and tenant rule sets remain independently scoped')]
     public function testApplicableScopes(): void
     {
         $tenantA = $this->rule('tenant-a', FirewallRuleObject::SCOPE_TENANT, 'tenant-a');
@@ -60,7 +60,10 @@ class FirewallStoreTest extends TestCase
             $this->store->depositRule($rule);
         }
 
-        $rules = $this->store->listApplicableRules('tenant-a');
+        $rules = array_merge(
+            $this->store->listSystemRules(),
+            $this->store->listRules('tenant-a')
+        );
         $reasons = array_map(static fn(FirewallRuleObject $rule): ?string => $rule->getReason(), $rules);
         sort($reasons);