[appDir]: Dynamic pages with dynamic parameters rendered as static by default

[peterjuras]

Verify canary release

• I verified that the issue exists in the latest Next.js canary release

Provide environment information

Operating System:
  Platform: linux
  Arch: x64
  Version: #1 SMP Wed Nov 23 01:01:46 UTC 2022
Binaries:
  Node: 18.13.0
  npm: 9.3.1
  Yarn: 1.22.19
  pnpm: N/A
Relevant packages:
  next: 13.1.5-canary.2
  eslint-config-next: N/A
  react: 18.2.0
  react-dom: 18.2.0

Which area(s) of Next.js are affected? (leave empty if unsure)

App directory (appDir: true)

Link to the code that reproduces this issue

https://github.com/peterjuras/nextjs-13-wrong-static-rendering

To Reproduce

1. Clone the repository
2. Run yarn build

Describe the Bug

In my project, the [slug]/page is rendered as static, although the cookies function is called. According to the docs, this should mark the page as dynamic.

Expected Behavior

The [slug] page should be marked as dynamic.

Which browser are you using? (if relevant)

No response

How are you deploying your application? (if relevant)

No response