Following library module references in import statements in an editor leads to spurious errors on non-existing RASCAL.MF files

**Describe the bug**

<img width="2101" height="246" alt="Image" src="https://github.com/user-attachments/assets/455202c0-b482-424f-90c6-6670be014280" />

I followed the reference to three library modules in three different editors for the same project, and these errors appeared in the diagnostics.