ci-package-builder: Don't fail on disabled/excluded OBS final status

Packages disabled or excluded on any of the target archs are being reported as a failure by the CI pipeline OBS.

If the package was intentionally disabled or excluded for some reason, e.g. it doesn't provide a package for that specific arch, the final status shouldn't be considered as a failure. Fix this.

Example cases:

• disabled arch failing: https://gitlab.apertis.org/pkg/aspectj/-/jobs/1011346#L4424
• excluded arch failing: https://gitlab.apertis.org/pkg/amdgcn-tools/-/jobs/1002245#L39