[BUG] showMin/Max-Value overlapping axes

[kodeaben]

• [x] I have written a good issue

Describe the bug

Whenever the `showMinValue` or `showMaxValue` is set and this value is close to one of the axes, it might overlap the axis. ## Describe how to reproduce the bug Edit the dataset in `_dataset` in `apps/cookbook/src/app/examples/charts-example/examples/stock-chart-example.component.ts:53` Example 1: minValue overlaps x-axis and y-axis: ``` typescript _dataset = [ { data: [ { x: 1637049659000, y: 12 }, { x: 0, y: 1110 }, ], borderColor: getThemeColorHexString('secondary'), }, ]; ```  Example 2: maxValue is hidden behind the edge of the chart: ``` typescript _dataset = [ { data: [ { x: 0, y: 20 }, { x: 2, y: 2 }, { x: 3, y: 6 }, ], borderColor: getThemeColorHexString('secondary'), }, ]; ```  Navigate to http://localhost:4200/#/home/showcase/chart-stock. The Chart should now be shown with the issue ## Which Kirby version was used? ## What was the expected behavior?

Expected behaviour is that the labels does not overlap.

Add any screenshots

Please complete the following information:

Are there any additional context?

The label mustn´t overlap the graph line (see comment)

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[MartinCBBankdata]

Yes, The only thing I would like to add is the solution does not put the label across the graph line. See the picture below.

[kodeaben]

Possible solution. This is the same data as in Example 1

This is the same data as in Example 2

Same examples with a larger y-value Example1:

Example2: