Unavoidable warning when using ubuntu-resolute-builder with tiny run image

[mhalbritter]

Compare the OS distribution instead, read from the io.buildpacks.base.distro.* labels with a fallback to the io.buildpacks.stack.distro.* labels set by Paketo images.

[wilkinsona]

I've changed this to a bug as that's what we now consider the unavoidable warning to be. This issue address that. It's also been backported in #51893.