MAPG-191 don't pass data by reference to IContent

src/Response/JsonContent.php

@@ -2,9 +2,9 @@
 
 class JsonContent extends ContentBase
 {
-    public function __construct(array &$data = [])
+    public function __construct(array $data = [])
     {
-        $this->data = &$data;
+        $this->data = $data;
     }
 
     public function render(): void