Rabbithole settings are not stored for individual media entities

Problem/Motivation

I am trying to override Rabbithole setting for a media entity.

Steps to reproduce

- Enable "Allow these settings to be overridden for individual entities"
- edit media entity, select a rabbit hole setting other than the default for the media entity type
- setting should be persisted, but isn't.

Proposed resolution

Drupal Core Version 9.1.10