hide project base path of file path in error overlay

[fi3ework]

Is your feature request related to a problem? Please describe.

No

Describe the solution you'd like

For now, the error overlay shows a diagnostic with an absolute file path. I think it's better to hide the project path prefix for better reading. We can trim the prefix or replace it with a string token.

Describe alternatives you've considered

No response

Additional context

No response

Validations

• [X] Read the docs.
• [X] Read the Contributing Guidelines.
• [X] Check that there isn't already an issue that asks for the same feature to avoid creating a duplicate.