In case of you choose “Stop auto-publishing”, you have to manually publish your build.
In Netlify terminology we locked our production to a new build.
“Locked deploy” notification is working fine when you click “stop auto-publishing” , but doesn’t work when you manually locked to a new deploy (click publish this specific deploy).
I see plenty of use case and the most critical one; When we need to communicate that a new public version is live. In auto-publishing mode, “succeed deploy” do the trick (build is automatically public after build), but not in case of stop auto-publishing mode.
It’s have been already discuss here little bit for “alternative solution”