Missing graph in 4.7.1

### Current Behavior

I have an environment that contains multiple projects ( around 50) the project are built using SBOM import with maven plugin and they were showing a graph for each project.
After the upgrade to dependencytrack 4.7.1 I cannot see anymore graph , there is only the main graph node without any other node

### Steps to Reproduce

1. start with a 4.7.0 projects with graph
2. upgrade from 4.7.0 to 4.7.1
3. check graph tab in projects -> empty

### Expected Behavior

Graph should be present

### Dependency-Track Version

4.7.1

### Dependency-Track Distribution

Container Image

### Database Server

PostgreSQL

### Database Server Version

_No response_

### Browser

Mozilla Firefox

### Checklist

- [X] I have read and understand the [contributing guidelines](https://github.com/DependencyTrack/dependency-track/blob/master/CONTRIBUTING.md#filing-issues)
- [X] I have checked the [existing issues](https://github.com/DependencyTrack/dependency-track/issues) for whether this defect was already reported