StandardButtons lacks a "Continue" button

The set of standard dialog buttons lacks a "Continue" button. In KDE, we prefer this wording over the typical "OK" button. Overriding the text isn't hard to do for QtWidgets dialogs, but it's impossible for QtQuick dialogs. As a result, to get the text "Continue" on the AcceptRole button, you have to replace the Dialog's built-in DialogButtonBox and all of its buttons with custom ones. This is much more heavyweight and not adealbreaker, but annoying.

See also https://bugreports.qt.io/browse/QTBUG-123641