Unused dependencies in standalone build using storybook

[andrea-benato-deltatre]

Link to the code that reproduces this issue

https://codesandbox.io/p/devbox/competent-shirley-zg6rwr

To Reproduce

• build the application using pnpm build
• goes in .next/standalone/node_modules/.pnpm

Current vs. Expected behavior

Right now you can find some storybook "related" dependencies like "esbuild" which are leading to vulnerabilities and unused (because they are devDeps) in production code.
Expect to not find them

Provide environment information

Operating System
   Platform: windows
   Architecture x86-64
   Version: 11
Binaries:
   Node: 20.12.2
   Npm: 10.5.0
   pnpm: 9.1.0

Which area(s) are affected? (Select all that apply)

Module Resolution, Output (export/standalone)

Which stage(s) are affected? (Select all that apply)

next build (local), Other (Deployed)

Additional context

I tested in both v,14,2,3 and 14,1,4