fix: use component images to include image archives

[brandtkeller]

Description

This updates the image selection process from using static images to the ZarfComponent GetImages() method to mirror how upstream collects images (including imageArchives)

[michalszynkiewicz]

@brandtkeller it is insufficient to fix the issue, right?
The image archive can have some arbitrary images inside (as I believe is in @willswire 's case) that even if listed under images as zarf.internal/... won't be meaningful for scanning. Or am I missing something?

[brandtkeller]

ah! I had made some assumptions but this is using the images references from the package to scan them external to the package.

Now that I actually read what is happening there might be more we need to evaluate. I need to grab some context on how the scanning is typically performed.. is it against a built package or solely the zarf manifest?