Symbol IDs generated by Windows and macOS are different.

I have such a directory structure:
```
|-- src/
|   |-- icons/
|   |   |-- networks
|   |   |   |-- icon-placeholder.svg
     ....
```
On macOS, ‘networks/icon-placeholder’ is correctly generated as the symbol ID, but on Windows, the result is ‘networksicon-placeholder’ with the slash missing, causing issues with image loading.