Cache tags from entities embedded in CKEditor (or any text item type field) are not bubbled up

Problem/Motivation

When resolving a text item (e.g. CKEditor WYSIWYG field), and that text item has an entity embed (e.g. media), updating that media item does not invalidate the cache for the GraphQL Compose response.

Steps to reproduce

1. Have a text field with CKEditor which can embed media
2. Embed an image media item
3. Fetch the GraphQL results for node including processed value for the text field
4. Swap the image on the media entity
5. The resulting processed HTML does not show the new image URL path

Proposed resolution

Add cache dependency on the processed value from the text item.

I've added a patch to support the embedded cache tags, but I'm having an issue forking graphql_compose to create an MR. I'll create an MR once I can.