spaceMin(Max) not respected when autoScalingEnabled (Y-Axis)

Hey,

I have live data in a chart, where its autoscaling as new data comes in. I'm trying to give it enough of a buffer so its not always readjusting the scale.

So when I setup my chart, I do the following
```
lineChartView.leftAxis.granularityEnabled = true
lineChartView.leftAxis.granularity = 1
lineChartView.leftAxis.labelCount = 20
lineChartView.leftAxis.forceLabelsEnabled = true
let yRangeBuffer: Double = 100000
lineChartView.leftAxis.spaceMin = yRangeBuffer
lineChartView.leftAxis.spaceMax = yRangeBuffer
```

But it seems autoscaling doesn't reflect that. Am I missing something here?

Cheers

Start by reproducing the reported Swift configuration on the Y-axis with autoScalingEnabled, live data, and the given spaceMin and spaceMax values. Trace the leftAxis autoscaling behavior and verify that both spacing values remain effective as new data arrives; done means the chart keeps the requested buffer without repeatedly collapsing the range.

Written by the indexing model from the issue text.