Creating Gatsby log entry fails if resource type name has been modified

Problem/Motivation

JSON Api allows for modification of details of what is rendered from the base entity information. The gatsby instant preview/ fast builds log relies on the entity type name matching for it to load related entity json

Steps to reproduce

To reproduce write a custom module, or use JSON API extras module to modify the resource type name of entity referenced by a node. Then create/ update a node which has a reference to the entity that has had its JSON API resource type name modified. If the modification no longer follows the `entity type id--bundle` format, then the log will not be written.

Proposed resolution

Don't rely purely on the output of the JSON API endpoint to load related entities, and instead load the type information from JSON API, and pull the actual entity type from that list.

Remaining tasks

I've attached a patch which I believe addresses the issue, but it needs review.