Issue #2944125 by John Cook: Disable exporting for Highcharts

modules/charts_highcharts/src/Charts/HighchartsChartsRender.php

@@ -194,6 +194,7 @@ class HighchartsChartsRender implements ChartsRenderInterface {
       $chartLegend->setY('0');
     }
 
+    // Set exporting options.
     $exporting = new ExportingOptions($options['exporting'] ?: []);
 
     $highchart = new Highcharts();

modules/charts_highcharts/src/Plugin/chart/Highchart.php

@@ -201,6 +201,7 @@ class Highchart extends AbstractChart {
       $chartLegend->setY('0');
     }
 
+    // Set exporting options.
     $exporting = new ExportingOptions($options['exporting'] ?: []);
 
     $highchart = new Highcharts();