Different Package Manager show different results

### Current Behavior

I am using Qt 6.4.2 from github and wrote the purl manually and got this:
`pkg:github/qt/qt5@6.4.2`
This only shows that the version is outdated, but 0 vulnerabilities

but if I use a different package manager, for example conan:
`pkg:conan/qt@6.4.2`

This has different results and shows me and 11 vulnerabilities.

What is causing the difference for the same version, but different package manager?

### Steps to Reproduce

1. Use `pkg:github/qt/qt5@6.4.2`
2. Use `pkg:conan/qt@6.4.2`

### Expected Behavior

I am expecting the same results for the same version, the package manager shouldn't have any influence in the result.

### Dependency-Track Version

4.12.2

### Dependency-Track Distribution

Container Image

### Database Server

N/A

### Database Server Version

_No response_

### Browser

Microsoft Edge

### 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