Loading dataset with node enricher

[ddevin96]

Describe the bug

Not all dataset working with enricher e.g. Cora

To Reproduce

run examples/pipeline.py

Expected behavior

Load with no issues

Desktop (please complete the following information):

• MacOS 26.3

[github-actions]

This issue is missing a required label.

Please add at least one of:

• chore
• docs
• feature
• fix
• refactoring

Current labels: bug

[github-actions]

This issue is missing a required label.

Please add at least one of:

• chore
• docs
• feature
• fix
• refactoring

Current labels: bug

[tizianocitro]

I believe this only need testing to verify that it works with all of them.

This should be fixed in #125.