[Dashboard] Better manage 'hover' on a chart to avoid hiding the curve

In a chart, the tooltip that appears when you hover over the chart with the mouse is too often positioned above the cursor, so you can no longer see where the cursor is.
This is particularly true when the series labels are long.

I’m copying Pierre-Gilles’s reaction:
Why not change that, indeed (if possible, we’re using ApexChart, I don’t know if it’s modifiable)