`IfcValve`'s usage of Post Nesting incomplete, different from IFC4, and not fully rendered

[pjanck]

Regarding the usage of Port Nesting on ´IfcValve`.

Comparing IFC 4.0.2.1:

with IFC 4.3.2.0:

there are these discrepancies:

• column System type is completely missing,
• column PredefinedType is (chaotically) different,
• column Description is not filled in,

although the documentation within the source MarkDown file seems to provide sufficient information for all columns:

https://github.com/buildingSMART/IFC4.3.x-development/blob/33fdbb94cec201f6b0489b61b34bcd3c3b102505/docs/schemas/domain/IfcHvacDomain/Entities/IfcValve.md?plain=1#L50-L200