Can also others benefit from the fix? 
I found the answer:
https://plugins.gradle.org/docs/publish-plugin
Edit 1
But it does not work 
it is still published automatically without a manual approval process.
What do I need to do in addition?
Edit 2
Oh well, it has to differ from project group as it seems, I tried ‘test’ and now I have a pending request.
I would like to have it without prefix since I provide a plugin for settings.gradle where it is currently not possible to use the DSL
Edit 3
Nope, it works fine, misconfiguration on my side. A lot of noise, a wrong pending request, and well, I hope the comment still helps someone else.