Server imports missing file extension

[brtinney]

Environment

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• Operating System: Darwin
• Node Version: v16.17.0
• Nuxt Version: 3.0.0-rc.13
• Nitro Version: 0.6.1
• Package Manager: [email protected]
• Builder: vite
• User Config: app, css, build, modules, publicRuntimeConfig, nitro
• Runtime Modules: @pinia/[email protected]
• Build Modules: -

---

Reproduction

https://stackblitz.com/edit/nuxt-starter-wvuvnj?file=app.vue,server%2Froutes%2Froute.ts

Describe the bug

As per reported in #6652 (specifically, my comment), importing pinia on the server results in an improperly set path.

Additional context

This only occurs when build is used, and does not occur in dev.

Logs

[nuxt] [request error] [unhandled] [500] Cannot find module '/home/projects/nuxt-starter-wvuvnj/.output/server/node_modules/pinia/dist/pinia' imported from /home/projects/nuxt-starter-wvuvnj/.output/server/chunks/route.mjs
  at InternalError.get (https://nuxt-starter-wvuvnj.w-credentialless.staticblitz.com/blitz.bba8d0a5a025db74852964077975228459d6d20b.js:6:292488)  
  at H3Error.get (./server/node_modules/h3/dist/index.mjs:134:22)  
  at normalizeError (./server/chunks/nitro/node-server.mjs:381:24)  
  at Object.errorhandler [as onError] (./server/chunks/nitro/node-server.mjs:400:57)  
  at toNodeHandle (./server/node_modules/h3/dist/index.mjs:787:27)  
  at async ufetch (./server/node_modules/unenv/runtime/fetch/index.mjs:28:17)  
  at async $fetchRaw2 (./server/node_modules/ohmyfetch/dist/shared/ohmyfetch.d1948a88.mjs:161:20)  
  at async setup (./server/chunks/app/server.mjs:1609:94)