Handle Windows Extended-Length Path Prefix (`\\?\`)

[roxblnfk]

When creating a Path from a string containing the Windows extended-length prefix \\?\, it should be automatically stripped during normalization.

Example

$path = Path::create('\\?\D:\git\project\src\File.php');

echo (string) $path;
// Expected: 'D:/git/project/src/File.php'

Why this happens

This prefix is returned by external tools (Rust, Go, .NET) that use Windows API for path canonicalization. It allows paths longer than 260 chars but is rarely needed in PHP.