Fixes [#11492](https://github.com/pnpm/pnpm/issues/11492).
In pnpm v11 a scoped registry resolved to different URLs depending on which command read it:
- `pnpm config get @<scope>:registry` returned the value from `.npmrc`
- `pnpm publish` used the value from `pnpm-workspace.yaml`'s `registries` block
When the two sources disagreed, `pnpm publish` silently targeted the URL from `pnpm-workspace.yaml`, even though `pnpm config get` reported a different (and seemingly authoritative) URL — so users could publish to the wrong registry without any indication.
This PR makes `pnpm config get @<scope>:registry` read from the merged `Config.registries` map (the same map `publish` and the resolvers use) before falling back to `authConfig`. Both commands now report and use the same URL.
Zoltan Kochan
7bcfd970e9