[BUG]: dataset created from transform dataset has no column info

[pascaleproulx]

• Scenario: transform dataset
• Step: last
• Link to the project: https://app.staging.terarium.ai/projects/3e4cbdf4-0721-4e26-b795-997e9f02746a/dataset/faf007d4-601e-44d0-b696-57039d56a0b3

Describe the issue Dataset created from transform dataset has no column info.