[php-src] Issue #22618: ext/uri: RFC 3986 IPv6 handling is inconsistent

Issue: https://github.com/php/php-src/issues/22618
Author: JKingweb

### Description

The following code:

```php
<?php
$u = new Uri\Rfc3986\Uri("http://[::0:0A]/");
var_dump($u->getRawHost());
var_dump($u->getHost());
var_dump($u->toRawString());
var_dump($u->toString());
```

Resulted in this output:
```
string(8) "[::0:0A]"
string(8) "[::0:0a]"
string(49) "http://[0000:0000:0000:0000:0000:0000:0000:000a]/"
string(49) "http://[0000:0000:0000:0000:0000:0000:0000:000a]/"
```

But I expected this output instead:
```
string(8) "[::0:0A]"
string(8) "[0000:0000:0000:0000:0000:0000:0000:000a]"
string(49) "http://[::0:0A]/"
string(49) "http://[0000:0000:0000:0000:0000:0000:0000:000a]/"
```

Alternatively I might expect this output:
```
string(8) "[::0:0A]"
string(8) "[::a]"
string(49) "http://[::0:0A]/"
string(49) "http://[::a]/"
```


### PHP Version

```plain
PHP 8.5.8 (cli) (built: Jul  1 2026 16:35:50) (NTS)
Copyright (c) The PHP Group
Zend Engine v4.5.8, Copyright (c) Zend Technologies
    with Zend OPcache v8.5.8, Copyright (c), by Zend Technologies
```

### Operating System

Arch Linux