Send all fields in notification

I have a form that utilizes conditional logic to reveal a single line text field if a radio button is marked “yes”.

In a notification, I would like to include all fields, including empty fields. I have found {all_fields:empty}. Nice!

But I want to also include the empty single line text field even when the radio button is NOT marked “yes”.

Is there a merge tag for this? If not, is there another way without including each of the fields in the notification?

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