fix: check if datapoint exists

Author: Raj Jaiswal

src/core/chart-api/chart-extra-context.tsx

@@ -102,7 +102,10 @@ function computeDerivedState(chart: Highcharts.Chart): ChartExtraContext.Derived
       for (const d of s.data) {
         // Points with y=null represent the absence of value, there is no need to include them and those
         // should have no impact on computed rects or navigation.
-        if (d?.visible && d.y !== null) {
+
+        // Although "d" can't be undefined according to Highcharts API, it does become undefined for chart containing more datapoints
+        // than the cropThreshold for that series (specific cases of re-rendering the chart with updated options listening to setExteme updates)
+        if (d && d.visible && d.y !== null) {
           seriesX.add(d.x);
           allXSet.add(d.x);
           addPoint(d);