Datapoint labels on stickiness graphs always count in days

[dabrady]

Bug description

In stickiness graphs, the label for each data point is always days, no matter what the X-axis actually is.

For example, in this basic pageview stickiness graph, if I set the window to Last 30 Days and group by week, the X-axis correctly counts in weeks but the flyout label that appears when you hover over a datapoint counts in days.

And if I set the window to Last 3 days and group by hour, same thing: X-axis is correct, datapoint label is not.

How to reproduce

1. Make a stickiness graph.
2. Change the grouped by from days to anything else.
3. Hover over any datapoint to see the incorrect unit being used in the label.

Debug info

• PostHog Cloud, Debug information:

Session: https://us.posthog.com/project/sTMFPsFhdP1Ssg/replay/018f5add-5d01-7469-9eed-ab648586bdd8?t=4866 
Admin: http://go/adminOrgUS/018ec041-b081-0000-e38c-eeae98ec37d3 (Project: 63416)
Sentry: http://go/sentryUS/63416

[bell-boy]

Hi, I would like to work on this issue. Is that okay?