Note: as I chopped up commits in different PRs it's possible that this one creates a merge conflict, but it should be easy to resolve 😅

Filtering traffic updates by departed makes sense, but I would recommend another implementation to do so.
This implementation requires the Pilot model (typdef) to be extended and does not actually filter the update from getting into the plugin. However we can avoid having to extend the model and prevent it from getting into the update queue by doing the necessary checks at