structure and style updates

Modules/Countries/Rules/ValidIso3166CountryCode.php

@@ -11,13 +11,13 @@ class ValidIso3166CountryCode implements ValidationRule
     public function __construct(
         private readonly bool $activeOnly = true,
         private readonly string $format = 'alpha2',
-    ) {
-    }
+    ) {}
 
     public function validate(string $attribute, mixed $value, Closure $fail): void
     {
         if (! is_string($value) && ! is_int($value)) {
             $fail('The :attribute must be a valid ISO 3166 country code.');
+
             return;
         }