#lazy_builder callback; builds a #pre_render-able block.
$entity_id: A block config entity ID.
$view_mode: The view mode the block is being viewed in.
array A render array with a #pre_render callback to render the block.
public static function lazyBuilder($entity_id, $view_mode) { return static::buildPreRenderableBlock(Block::load($entity_id), \Drupal::service('module_handler')); }