[php-src] Issue #21355: Windows builds don't support OPENSSL_KEYTYPE_X25519, OPENSSL_KEYTYPE_ED25519, OPENSSL_KEYTYPE_DSA, etc

Issue: https://github.com/php/php-src/issues/21355
Author: terrafrost

### Description

The following code:

```php
echo OPENSSL_KEYTYPE_X25519, PHP_EOL, OPENSSL_VERSION_TEXT, PHP_EOL;

$key = openssl_pkey_new(['private_key_type' => OPENSSL_KEYTYPE_X25519]);
var_dump($key);

while ($e = openssl_error_string()) {
    echo $e, PHP_EOL;
}
```

Resulted in this output:
```
4
OpenSSL 3.5.4 30 Sep 2025
bool(false)
error:80000003:system library::No such process
error:10000080:BIO routines::no such file
error:07000072:configuration file routines::no such file
error:80000003:system library::No such process
error:10000080:BIO routines::no such file
error:07000072:configuration file routines::no such file
```

But I expected this output instead:
```
OpenSSL 3.0.13 30 Jan 2024
object(OpenSSLAsymmetricKey)#1 (0) {
}
```
Because the Windows PHP builds include their own version of OpenSSL (usually the latest one as OPENSSL_VERSION_TEXT kinda indicates) as opposed to relying on whatever the globally installed version on the OS is, I'd expect them to have full support for _all_ key types mentioned at https://www.php.net/manual/en/openssl.key-types.php but that appears not to be the case.

### PHP Version

```plain
PHP 8.5.1 (cli) (built: Dec 17 2025 10:54:30) (NTS Visual C++ 2022 x64)
Copyright (c) The PHP Group
Zend Engine v4.5.1, Copyright (c) Zend Technologies
    with Zend OPcache v8.5.1, Copyright (c), by Zend Technologies
```

### Operating System

Windows 11, Version 25H2 (OS Build 26200.7840)