Update actions-built-in-category-chart.json

add grids/CheckboxListModule so that field selection tool is displayed in toolbar

Author: IGvaleries

samples/charts/toolbar/actions-built-in-category-chart.json

@@ -36,6 +36,7 @@
     "charts/LegendModule",
     "layouts/ToolbarModule",
     "charts/CategoryChartModule",
-    "charts/CategoryChartToolbarModule"
+    "charts/CategoryChartToolbarModule",
+    "grids/CheckboxListModule"
   ]
-}
+}