Links to public files under /sites/*/files/ incorrectly flagged as "access-denied"

We need more info on how to reproduce it

After reviewing the problem with @frouco the problem comes when the media file's original language does not match the content language or is not translated.

The problem comes because the media is not translated 404/403, so it does not reach the file, as the file is the "link", we should check if the file is accessible

Ready to review, now it gets the file from the media, and checks the file access instead of the media.

src/Repository:checkDownloadAccessEntity

  /**
   * {@inheritdoc}
   */
  public function checkDownloadAccessEntity(EntityInterface $entity): bool {
    $mesh_account = $this->getMeshAccount();
    return $entity->access('download', $mesh_account);
  }

src/EntityRender:accessCheckTarget

    if ($target->getSourceFileId() !== NULL || $target->getEntityType() === 'file') {
      $file = $target->getSourceFileId() !== NULL
        ? $this->entityTypeManager->getStorage('file')->load($target->getSourceFileId())
        : $entity;
      return $file
        ? $this->entityMeshRepository->checkDownloadAccessEntity($file)
        : FALSE;
    }

I have reviewed the MR and checked it in local.
It works as expected.

It is ready to merge.