Report undefined key when array shape is used

[zmitic]

Reproducer: https://psalm.dev/r/db0313ec1b

---

Use case:

function expects array{name?: string} but doesn't report any errors when undefined key is sent. Is this by design?

[psalm-github-bot]

I found these snippets:

https://psalm.dev/r/db0313ec1b

<?php

/**
 * @param array{name?: string} $data
 */
function test(array $data): void {
    print_r($data);
}

$data = [
    'undefined_key' => 'test',    
];

test($data);

Psalm output (using commit 29a2162):

No issues!

[AndrolGenhald]

This is by design, but something we hope to improve. See #5299.