[24.0] Fix for not-null in 'column_list' object

[hujambo-dunia]

#18486

How to test the changes?

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• I've included appropriate automated tests.
• This is a refactoring of components with existing test coverage.
• Instructions for manual testing are as follows:
  1. [add testing steps and prerequisites here if you didn't write automated tests covering all your changes]

License

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[mvdbeek]

@hujambo-dunia Can you mark this as ready for review (if it is), rebase onto 24.0 (git rebase --onto release_24.0 HEAD~4) and then change the target branch to 24.0 ?