[charts] Handle case where gradient stop offset could be Infinite (@JCQuintas)#16309

JCQuintas merged 1 commit intomui:v7.xmui/mui-x:v7.xfrom

JCQuintas:cherry-pick-charts-piecewise-gradientJCQuintas/mui-x:cherry-pick-charts-piecewise-gradientCopy head branch name to clipboard