Moved public const declarations after use of traits

Ref: api-platform/core#3402 (comment)

Author: Ocramius

TypeFactory.php

@@ -27,6 +27,8 @@
  */
 final class TypeFactory implements TypeFactoryInterface
 {
+    use ResourceClassInfoTrait;
+
     /**
      * This constant is to be provided as serializer context key to conditionally enable types to be generated in
      * a format that is compatible with OpenAPI specifications **PREVIOUS** to 3.0.
@@ -40,8 +42,6 @@ final class TypeFactory implements TypeFactoryInterface
      */
     public const CONTEXT_SERIALIZATION_FORMAT_OPENAPI_PRE_V3_0 = self::class.'::CONTEXT_SERIALIZATION_FORMAT_OPENAPI_PRE_V3_0';
 
-    use ResourceClassInfoTrait;
-
     /**
      * @var SchemaFactoryInterface|null
      */