[BUG] Unable to install untracked peer optional dependency

Is there an existing issue for this?

• I have searched the existing issues

This issue exists in the latest npm version

• I am using the latest npm

Current Behavior

npm i <dependency name> succeeds with exit code 0 but the resultant dependency is not present, if <dependency name> is an untracked (not included in prod or dev dependencies) optional peer dependency.

I believe this is caused by https://github.com/npm/cli/pull/8431.

Expected Behavior

npm i <dependency name> should always install the dependency if the dependency has no version incompatibility issues.

Steps To Reproduce

Easiest way to see this is working in the mongodb package, because this scenario arose in our CI.

1. Clone node-mongodb-native.
2. run npm i
3. install kerberos: npm i kerberos
4. attempt to use kerberos: `node -p "require('kerberos')":

node:internal/modules/cjs/loader:1408
  throw err;
  ^

Error: Cannot find module 'kerberos'

Environment

• npm: 11.5.0+
• Node.js: doesn't matter
• OS Name: doesn't matter
• System Model Name: doesn't matter
• npm config: doesn't matter

Reproduce in the node-mongodb-native package by running npm i, then npm i kerberos, followed by node -p "require('kerberos')". Trace npm 11.5.0's dependency installation and optional peer handling; done means an untracked optional peer dependency is present and can be required when no version incompatibility exists.