Issue: Rendering SignalXY plots will crash when using InvertX() with specific conditions: data conains same X value more than twice. The very same data sample will render correctly using InvertX with ScatterLines.

ScottPlot Version: 5.0.39

Code Sample:

ScottPlot.Plot myPlot = new();
//myPlot.Add.SignalXY([0d, 1, 1], [4d, 4, 6]); // this is fine
myPlot.Add.SignalXY([0d, 1, 1, 1], [4d, 8, 4, 6]); // this causes crash on render
myPlot.Axes.InvertX();
myPlot.SavePng("InvertX_bug.png", 400, 300);