2022-04-25: Modify no_orphaned.adoc to capture orphaned biomaterials

**Describe the issue**

As a data wrangler, I would like the tests to correctly detect orphaned entities. More information in [dcp-943](https://github.com/ebi-ait/dcp-ingest-central/issues/943)

**Test modification**

- Test name:
- Test Description:
- Cypher query:
```
MATCH (n)
WHERE NOT EXISTS (n)--(:process)
AND NOT (n:supplementary_file)
AND NOT (n:process)
RETURN n, "Entity does not have linkings with any other entity", labels(n)
```

**Acceptance criteria**

- [ ] The test has been reviewed
- [ ] The test has been implemented into the `graph_test_set` folder

Start with no_orphaned.adoc and the existing files in the graph_test_set folder, then review dcp-943 for the fuller orphaned-biomaterials requirements. Verify the Cypher query's intended entities and implement the reviewed test in graph_test_set; done means the test detects orphaned entities and satisfies the listed acceptance criteria.

Written by the indexing model from the issue text.