Set quayImageExpiry on non release builds

# WHAT

By adding the expiry flag to the images being build we can automatically clean up older images from qauy.io.
Current images build for PRs are keep forever.

# DONE
- [ ] Images build for PRs have the expiry label added.
- [ ] Images create for release are unaffected.
- [ ] Images tagged as `main` are unaffected.

Start by locating the image-build workflow or configuration used for pull requests, releases, and the main tag. Check how image labels are currently assigned and verify the behavior against the issue checklist: PR images receive the expiry label, while release and main images remain unaffected.

Written by the indexing model from the issue text.