Missing key 'class' in $context['input'] from getExpectedInputClass function in PayloadArgumentResolver

[helyakin]

API Platform version(s) affected: 2.7.*

Description
When using a custom DTO I'm facing this issue

Type error: ApiPlatform\Symfony\Bundle\ArgumentResolver\PayloadArgumentResolver::getExpectedInputClass(): Return value must be of type ?string, array returned (Behat\Testwork\Call\Exception\FatalThrowableError)

I went then to debug what was in $context['input'] and found out that it was containing indeed an array looking like:
['class' => ...., 'name' => ...]
And the key class contains the needed string

How to reproduce

Possible Solution
Returning return $context['input']['class'] ?? $context['resource_class'] in the getExpectedInputClass function from the PayloadArgumentResolver

Additional Context

[stale]

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