Preserve Group context for Media Library

Problem/Motivation

The Group → module allows for building complex community sites. Each Group can have it's own Nodes, Members, and Media (using the GroupMedia → and Group_Media_Library → modules).

Ideally, when authors are working within a Group context, the media they upload using the Gutenberg/MediaLibrary should be associated with the Group the node is being authored within.

However, it's not clear how media uploaded via Gutenberg's media library implementation can be saved or displayed in a manner that allows for group context to persist.

Steps to reproduce

1. Install modules: group, groupmedia, group_media_library
2. Setup Group with a content type that has Gutenberg enabled
3. Create a node of that content type and add media via the Gutenberg editor
4. Notice that the media element you uploaded is not associated with the Group and that the Media Library UI does not restrict to viewing/selecting media belonging to that group.

Any help would be appreciated. Funding available if someone wants to take this on.