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Prefect Community

Does anyone know how to make regular `typer` (not Prefect params) work with <https://typer.tiangolo.com/tutorial/arguments/optional/|optional> `None`? E.g., this only works when it’s not a flow:
```from typing import Optional

import typer
from prefect import flow


# @flow
def load_ids_flow(
    file_date: Optional[str] = typer.Argument(None),
) -&gt; None:

    if file_date:
        print(f"File date is {file_date}")
    else:
        file_date = typer.prompt("What's the file date in YYYYMMDD?")
        print(f"You've entered {file_date}")

    # do something else with this file date...


if __name__ == "__main__":
    typer.run(load_ids_flow)```

As a flow, I get `TypeError: Object of type 'ArgumentInfo' is not JSON serializable`

Context is that I’d like to do this in case I’m running a one-off from the CLI and I forget how the script is supposed to work (it’ll prompt me with the proper info)