Toybox::Activity::Position is not available on Data Fields, but info.currentLocationAccuracy from Toybox::Activity::Info returns a Position.QUALITY_* value. It isn't a big issue, and of course one can hard code the constants. I just don't think it's ideal, so I thought of reporting it.
(let me know if I'm missing something here. Maybe they are available somewhere else and accessible on data fields. I couldn't find anything about it in the documentation).