bug: prefetch_relationships does not support directionality

[ajtmccarty]

Component

API Server / GraphQL

Current Behavior

if you call NodeManager.get_many with prefetch_relationships=True and any of the nodes you are fetching include a directional relationship, it will not be property retrieved.
For example, when retrieving a hierarchical node (each node has cardinality=one parent relationship and a cardinality=many children relationship that share the parent__child identifier), any parents and children will be returned as part of both the parent and children relationships b/c the query does not take relationship directionality into account.

Expected Behavior

The relationships should be retrieved properly.

Steps to Reproduce

No response

Additional Information

fix will be in the NodeListGetRelationshipsQuery to add directions based on the relationship schema being queried