Add button to remove SBOM from a project

### Current Behavior

It is only possible to replace an SBOM via the GUI by uploading a new one. There is no option to remove or clear an existing SBOM from a project through the GUI. This can only be done via the API.

### Proposed Behavior

Add a GUI option to remove an SBOM from a project, not just replace it. This would let users reset a project’s SBOM without using the API.

### 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 enhancement was already requested