unreachable program point: mime_content_type()

### Description

The following code:

```php
<?php
var_dump(mime_content_type('./..'));
?>
```

Resulted in this output:
```
/home/dan/php-src/main/streams/plain_wrapper.c:290:4: runtime error: execution reached an unreachable program point
```




### PHP Version

8.4.1

### Operating System

_No response_