[php-src] Issue #11797: PHP 8.2: Issue with type declaration for `iterable|object`

Issue: https://github.com/php/php-src/issues/11797 Author: mpyw ### Description With PHP 8.2, the following changes were applied: - [PHP: rfc:iterator_xyz_accept_array](https://wiki.php.net/rfc/iterator_xyz_accept_array) - [RFC: Make the iterator_*() family accept all iterables by TimWolla · Pull Request #8819 · php/php-src](https://github.com/php/php-src/pull/8819) As a result, iterable became an alias for Traversable|array, changing the result of reflection acquisition as mentioned [here](https://externals.io/message/118939). However, there's a problem. While Traversable|object becomes an error because it's redundant, iterable|object compiles without any issue. But if we resolve the alias of iterable|object, it becomes **Traversable|object|array**, which is an invalid expression for PHP's type declaration. In fact, we encountered a bug where creating a mock of a class with a method that takes iterable|object as an argument in the [mockery/mockery](https://github.com/mockery/mockery) causes a compile error only in PHP 8.2 or later. Should this be fixed by prohibiting the declaration of iterable|object itself? Or is this intended behavior, and should be addressed on the library side? ```php class ExampleClass { public function __invoke(iterable|object $arg): void { } } ``` ```php // Type Traversable|object|array contains both object and a class type, which is redundant $mock = \Mockery\Mockery::mock(Example::class); ``` ### PHP Version PHP 8.2 ### Operating System _No response_