css_module proc-macro panics in rust-analyzer

**Problem**

`css_module` proc macro panics in rust-analyzer with
`proc-macro panicked: Unable to read css module file: Os { code: 2, kind: NotFound, message: "The system cannot find the file specified."`.
normal build works fine.

i think #4857 is related, though i'm not sure whether making the same solution by making a stub placeholder specifically for rust-analyzer will work.
i guess it would be better than an error

**Steps To Reproduce**

Steps to reproduce the behavior:

- create a new bare-bones project
- create a css file and import it with css_module macro
- enable rust-analyzer in the project

repo created with these steps: https://github.com/l5cs/dx-css-mre

**Expected behavior**

rust-analyzer correctly finds the file with the same proc-macro behaviour as during regular compilation.

**Environment:**

- Dioxus version: 0.7.3
- Rust version: 1.92.0
- OS info: windows
- App platform: any

**Questionnaire**

I'm interested in fixing this myself but don't know where to start.