[Bug]: llm function calls in chat-message[] don't export to dataset

[andris1]

What happened?

I have an array of chat messages that include function calls that I append to a dataset. Data studio shows an empty cell for function calls.

What was the expected functionality?

Expected to see the function call JSON w/ name of function and arguments.

Describe your environment

Windows 11, Rivet 1.7.7

Relevant log output

No response

Relevant screenshots

No response

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