ArgumentTypeCoercion when using string-class<Interface> in a php attribute

[Ilyes512]

When using a php (8) attribute that expects a single parameter of type class-string<Foobar> in its constructor it returns an ArgumentTypeCoercion-error. The error incorrectly states I am passing a parent class name while in fact it's a child class name.

See https://psalm.dev/r/e6976b117f (took the snippet from #4871 that might be related to this issue)

[psalm-github-bot]

I found these snippets:

https://psalm.dev/r/e6976b117f

<?php

#[Attribute(Attribute::TARGET_CLASS)]
class Foo
{
    /** @var class-string */
    private string $className;
    
    /**
     * @param class-string<Foobar> $className
     */
    public function __construct(string $className)
    {
        $this->className = $className;
    }
}

interface Foobar {}

class Bar implements Foobar {}

#[Foo(className: Bar::class)]
class Baz {}

Psalm output (using commit 89ee1f1):

ERROR: ArgumentTypeCoercion - 22:18 - Argument 1 of Foo::__construct expects class-string<Foobar>, parent type "Bar" provided