Paths modules should not import Prelude

**Describe the bug**

mixins interact weirdly with Paths in that if I change the Prelude to be something else, the Paths module fails to compile. I think the autogenerated modules should not ever be influenced by something like mixins.

**To Reproduce**

- add a Prelude mixin that overrides a function used in a Paths module

**Expected behavior**

id expect Paths modules to compile the exact same, no matter the environment.

**System information**

n/a

**Additional context**

#8689 might be relevant

Start by reproducing the issue with a Prelude mixin that overrides a function used by an autogenerated Paths module, then read the related discussion in #8689. Done means the Paths module compiles identically regardless of the Prelude or mixin environment.

Written by the indexing model from the issue text.