Some strange NEVER compatibility issue

https://phpstan.org/r/cbdc5e54-29b0-486f-9f5b-cac0e4366768

```php
<?php declare(strict_types = 1);

interface foo {
	/**
	 * @return void
	 * @phpstan-return never
	 */
	public function bar();	
}

class bar implements foo {
	public function bar(): void {
		throw new \Exception();	
	}
}
```

Removing the native `void` return type fixes the issue.