I’ve met plenty of good candidates who tie themselves in knots about the publications they do or don’t have, and how that impacts their viva.
Your examiners are most interested in you and your thesis in the viva. Prior publications are helpful, but don’t determine success. A chapter that has been accepted as a journal paper may still need corrections for your thesis; there could be more that needs to be said for the purposes of a thesis that was not needed in a journal.
Success in the viva cannot pivot on how many publications you do or don’t have; it’s a confidence boost for you if your work has been reviewed well elsewhere, but it’s not counted against you if publications don’t align with your own goals.