Fix: Add test case

Related to #893.

test/Fixture/Methods/PrivateInFinalClassRule/script.php

@@ -11,6 +11,10 @@ protected function method(): void
 };
 
 $bar = new class() {
+    use TraitWithProtectedMethod;
+};
+
+$baz = new class() {
     use TraitWithAbstractProtectedMethod;
 
     protected function method(): void

test/Integration/Methods/PrivateInFinalClassRuleTest.php

@@ -61,7 +61,11 @@ public function testPrivateInFinalClassRule(): void
                 ],
                 [
                     'Method method() in anonymous class is protected, but since the containing class is final, it can be private.',
-                    16,
+                    9,
+                ],
+                [
+                    'Method method() in anonymous class is protected, but since the containing class is final, it can be private.',
+                    20,
                 ],
             ],
         );