Metadata not transferred to attributes

[porebskk]

Bug Report

Q	A
Version(s)	all of them

Summary

Metadata values are not transferred to PSR-7 attributes. The other way round is also missing, from PSR-7 to Laminas.

How to reproduce

$request = new \Laminas\Http\Request('GET', '/metadata-to-attributes', [], [], [], [], [], []);
$request->setMetadata('metadata-key', 'metadata-value');

$psr7Request = \Laminas\Psr7Bridge\Psr7ServerRequest::fromLaminas($request);

if ($psr7Request->getAttribute('metadata-key') === 'metadata-value') {
    echo 'transformation complete';
} else {
    echo 'transformation incomplete';
}

Expected behavior

I would assume that the metadata from laminas request object are transferred to the PSR-7 request.