POST/PUT /project allows you to update tags but POST/PUT policy doesn't

### Current Behavior

If you set `.tags` in POST/PUT requests to v1/project the tags will be updated
If you set `.tags` in POST/PUT request to v1/policy the contents are ignored

### Steps to Reproduce

1.

### Expected Behavior

You can update policy tags via POST/PUT v1/policy

### Dependency-Track Version

4.13.2

### Dependency-Track Distribution

Container Image

### Database Server

N/A

### Database Server Version

_No response_

### Browser

N/A

### 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