Skin extraction for elemental nodal data does not work

[janvonrickenbach]

Before submitting the issue

• I have checked for Compatibility issues
• I have searched among the existing issues
• I am using a Python virtual environment

Description of the bug

Skin extraction for elemental nodal data does currently not work. The workflow just returns the elemental nodal data of the solid in this case.

Steps To Reproduce

See test_skin_extraction test added in this PR: #673

Which Operating System are you using?

Windows

Which DPF/Ansys version are you using?

DPF Server 2025.1.pre0

Which Python version are you using?

3.7

Installed packages