Missing Schema for hierarchy and expand_hiearachy

Problem/Motivation

Split from https://www.drupal.org/project/facets/issues/3523188#comment-16105336 🐛 The configuration property processor_id doesn't exist Active

With config_inspector installed, and a view that has facets with the "hierarchy" option enabled, I get these results in the report for the config schema:

'hierarchy' is not a supported key.

'expand_hierarchy' is not a supported key.

Steps to reproduce

Install config_inspector as well as facets.

Add a facet to a view with the hierarchy options checked (it might also apply even if that's not checked). My view is search_api results but I don't think that part is necessary.

Check the config inspector report.

Proposed resolution

Add the missing schema keys.