bug: Wrongly mapped diagnostics in LS

[Arcticae]

The diagnostics are being refreshed for VFS files again, which leads to wrongly mapping them to VFS files instead of user code

Example:

[orizi]

I would not consider it Wrongly mapped - it is just also mapped for the VFS file.

we can rather easily make it actually point to the error within the generated file if it was opened (by stopping the remapping upon getting to the generated file)