Description of problem:

Visiting the catalog graph results in no graph being rendered (attached image)

Prerequisites (if any, like setup, operators/versions):

Import some entities with relationship, e.g https://github.com/rhdh-demo-gh/ob-demo/

Steps to Reproduce

1. Import some entities with relationship, e.g https://github.com/rhdh-demo-gh/ob-demo/
2. Visit an entity in the catalog
3. View the Dependencies tab
4. Click View Graph to see a full size relationship graphic

Actual results:

Graphic does not render

Expected results:

Graphic is rendered showing relationships

Reproducibility (Always/Intermittent/Only Once):

Always in 1.8.x

Build Details:

RHDH Version: 1.8.2
Backstage Version: 1.42.5

Additional info (Such as Logs, Screenshots, etc):