pnpm 11.2.1 on Node.js NPM

Minor Changes

Experimental: Adding @pnpm/pacquet (the Rust port of pnpm) to configDependencies in pnpm-workspace.yaml now delegates the materialization phase of pnpm install to the pacquet binary. pnpm still owns dependency resolution; pacquet only fetches and imports from the freshly-written lockfile. This is an opt-in preview of the Rust install engine #11723.
To configure pacquet in a project, run:
```
pnpm add @pnpm/pacquet --config
```
You'll see changes in pnpm-workspace.yaml and pnpm-lock.yaml that should be committed. If you experience any issues with pacquet, please let us know by mentioning this in the GitHub issue you create.

Mark optional subdependency snapshots of config dependencies with optional: true in the env lockfile, matching how optional dependencies are recorded elsewhere in pnpm-lock.yaml. Previously, snapshots for the platform-specific subdeps pulled in via a config dep's optionalDependencies were written as empty objects, which was inconsistent with the rest of the lockfile and made it look like those non-host platform variants were required.
Fix pickRegistryForPackage returning the wrong registry for an unscoped npm: alias under a scoped local name. A manifest entry like "@private/foo": "npm:lodash@^1" was routing the lodash fetch through registries["@private"], even though lodash is unscoped and doesn't live on that registry. The npm-alias branch now returns the alias target's own scope (or null for an unscoped target, falling through to registries.default) instead of leaking into the local key's scope.
Don't print "Installing config dependencies..." when config dependencies are already installed and nothing needs to be fetched, re-linked, or removed.