Symfony version(s) affected

7.1.0

Description

Cache attribute'svary property is silently ignored with following config:

framework:set_locale_from_accept_language:true

And following controller

useSymfony\Component\HttpFoundation\JsonResponse;useSymfony\Component\HttpKernel\Attribute\Cache;class SomeController{    #[Cache(smaxage:3600, vary: ['X-Some-Header'])]publicfunctionindex():Response    {returnnewJsonResponse("OK");    }}

TheLocaleListener adds an attribute to the request that is used by theResponseListener to add aVary: Accept-Language header.
However, this occurs before theCacheAttributeListener, which doesn't take the attribute'svary property into account if there is already aVary header on the response.

Is this expected?

How to reproduce

See above.

Possible Solution

No response

Additional Context

No response