[php-src] Issue #22369: wrong path succeeds in stream_context_set_options

Issue: https://github.com/php/php-src/issues/22369
Author: Playit3110

### Description

After Initiating a TCP-Server I wanted to enable TLS encryption with the following code:

```php
$socket = stream_socket_server("tcp://0.0.0.0:8000", $errno, $errstr);


$options = [
    'ssl' => [
        'local_cert' => '/not/a/real/path/to/file.cert',
        'local_pk' => '/not/a/real/path/to/file.key',
    ],
];

echo stream_context_set_options($socket, $options);
```

After execution `stream_context_set_options` return true, even if the files for encrypting connections is missing

### PHP Version

```plain
PHP 8.4.21 (cli) (built: May  7 2026 18:46:27) (NTS)
Copyright (c) The PHP Group
Built by Debian
Zend Engine v4.4.21, Copyright (c) Zend Technologies
    with Zend OPcache v8.4.21, Copyright (c), by Zend Technologies
```

### Operating System

Debian 13 Trixie