I've created a facet block according to this example Programatically render a block in a twig template
I've created the facet block as follows:
$variables['block_output'] = Drupal::service('plugin.manager.block')->createInstance("facet_block:topic")->build();
That works great, but I'm missing the block template itself on my page (the block around the facet links output). I need a custom suggestion for this block to format it. Unfortunately, the hook_theme_suggestions_alter() doesn't detect this block. How can I add a file name suggestion?