OXDEV-8670 Use flat arrays in PSR4 finder

Author: tkcreateit

src/Framework/Psr4AggregatedFinder.php

@@ -9,7 +9,7 @@
 
 namespace OxidEsales\GraphQL\Base\Framework;
 
-use AppendIterator;
+use ArrayObject;
 use Kcs\ClassFinder\Finder\FinderInterface;
 use Kcs\ClassFinder\Finder\Psr4Finder;
 use Kcs\ClassFinder\Finder\ReflectionFilterTrait;
@@ -22,20 +22,15 @@ class Psr4AggregatedFinder implements FinderInterface
 {
     use ReflectionFilterTrait;
 
-    private AppendIterator $iterator;
-
-    public function __construct()
-    {
-        $this->iterator = new AppendIterator();
-    }
+    private array $array = [];
 
     public function addFinder(Psr4Finder $finder): void
     {
-        $this->iterator->append($finder->getIterator());
+        $this->array = array_merge($this->array, iterator_to_array($finder->getIterator()));
     }
 
     public function getIterator(): Traversable
     {
-        return $this->iterator;
+        return new ArrayObject($this->array);
     }
 }