[DX] Fix message on callable filter returns union or intersection

Author: samsonasik

src/Assert/Filter.php

@@ -36,12 +36,14 @@ public static function boolean(callable $filter): void
 
         if ($returnType instanceof ReflectionUnionType || $returnType instanceof ReflectionIntersectionType) {
             $separator = $returnType instanceof ReflectionUnionType ? '|' : '&';
+            /** @var ReflectionNamedType[] $types */
+            $types = $returnType->getTypes();
             throw new InvalidArgumentException(
                 sprintf(
                     'Expected a bool return type on callable filter, %s given',
                     implode($separator, array_map(
-                        static fn (ReflectionNamedType $type): string => $type->getName(),
-                        $returnType->getTypes()
+                        static fn (ReflectionNamedType $reflectionNamedType): string => $reflectionNamedType->getName(),
+                        $types
                     ))
                 )
             );