Aligned timeline tooltip doesn't handle large changes in gaps in initial dataset well

[MMeent]

Example: https://star-history.com/#neondatabase/neon&Timeline

The neondatabase/neon repository has a long time between the first and the second datapoint (>~ 1 year) so all later datapoints all use that same time scale for their tooltips (N years), but later datapoints only have a small gap (2 days for 900 stars, if you look at the unaligned timeline).

I think the issue originates from https://github.com/bytebase/star-history/blob/49f1f439e2dbfcc963901415cb96b0efd938cfa4/packages/xy-chart/index.ts#L325-L336 where the chart is locked-in at the scale of the first datapoint, which doesn't always work well. A better scale might be Math.min(firstDataPoint, lastDataPoint / nDataPoints), or Math.min(...dataPointDeltas)