[php-src] Issue #22361: Unicode issue

Issue: https://github.com/php/php-src/issues/22361
Author: tvdijen

### Description

The following code:

```php
<?php

$string_regex = '/^
        [
            \x09
            \x0A
            \x0D
            \x{20}-\x{7E}
            \x{85}
            \x{A0}-\x{D7FF}
            \x{E000}-\x{FDCF}
            \x{FDF0}-\x{FFFD}
            \x{10000}-\x{1FFFD}
            \x{20000}-\x{2FFFD}
            \x{30000}-\x{3FFFD}
            \x{40000}-\x{4FFFD}
            \x{50000}-\x{5FFFD}
            \x{60000}-\x{6FFFD}
            \x{70000}-\x{7FFFD}
            \x{80000}-\x{8FFFD}
            \x{90000}-\x{9FFFD}
            \x{A0000}-\x{AFFFD}
            \x{B0000}-\x{BFFFD}
            \x{C0000}-\x{CFFFD}
            \x{D0000}-\x{DFFFD}
            \x{E0000}-\x{EFFFD}
            \x{F0000}-\x{FFFFD}
            \x{100000}-\x{10FFFD}
        ]*$/Dxu';

$str = 'ünïcöde €Φ汉';

preg_match($string_regex, $str);
```

Resulted in this output:
```
Used to pass, do not know the except version where it failed (last weeks though)
```

But I expected this output instead:
```
No longer passes in 8.5.7
```


### PHP Version

```plain
==> Setup PHP
✓ PHP Installed PHP 8.5.7
```

### Operating System

_No response_