How to achieve facet dependencies in 3.x facets exposed filters?

I’ve successfully implemented hook_preprocess_views_exposed_form() to attach #states to a specific field, and it worked

Given that exposed filters are form-based, a possible solution would implement a processor that mimics the #state management approach used in Webforms. This processor would automatically apply #states to each field.

I looked into doing this for hierarchical taxonomies with Facets Taxonomy Multilevel: https://www.drupal.org/project/facets_taxonomy_multilevel/issues/3511228 💬 Working with facets 3? Active

Someone else mentioned customizing the links widget plugin on slack: https://drupal.slack.com/archives/C3E9QDZ5M/p1741194501345919