Theme_image_formatter now requires a URL object instead of a path

Manually creating a image formatter now requires a URL instead of a path. The URL must be an Drupal\Core\Url. Those can either be requested from an entity when working with one (see example below), or by creating one with Url::fromRoute() or Url::fromUri().

Before

:

$element = [
  '#theme' => 'image_formatter',
  '#image_style' => 'name_of_image_style',
  '#item' => $item,
  '#path' => [
    'path' => $entity->getSystemPath(),
    'options' => [],
  ],
];

After

$element = [
  '#theme' => 'image_formatter',
  '#image_style' => 'name_of_image_style',
  '#item' => $item,
  '#url' => $node->urlInfo(),
];