PR: IfcBuilding attributes not being exported

### Problem Description

Hello,

my colleague found a weird issue regarding exporting basic entitie¨s attributes. Specifically the IfcBuilding.Description and IfcBuilding.LongName attribute are not exported. The IfcBuilding.LongName is set to the same value as IfcBuilding.Name.

For IfcSite and IfcProject it works fine. I used the default shared parameters file to create respective project parameters.

See attached file to reproduce.

[BUG_IfcBuildingAttributes.zip](https://github.com/user-attachments/files/25263147/BUG_IfcBuildingAttributes.zip)

### Revit Version

2025.4.x

### IFC for Revit Addon Version

25.4.40

### Windows Version

11 25H2

Start with the attached BUG_IfcBuildingAttributes.zip reproduction and compare the exported IfcBuilding attributes with the working IfcSite and IfcProject attributes. The fix is complete when IfcBuilding.Description and IfcBuilding.LongName export correctly, with LongName no longer copied from Name.

Written by the indexing model from the issue text.