style(dashboard): add line shadow to pareto chart

Author: GerilLeto

dashboard/src/components/plugins/viz-components/pareto-chart/option/series.ts

@@ -51,6 +51,10 @@ export function getSeries(conf: IParetoChartConf, data: TPanelData, formatters:
       symbolSize: 2,
       lineStyle: {
         width: 1,
+        shadowColor: 'rgba(255,255,255,1)',
+        shadowBlur: 0,
+        shadowOffsetX: 0,
+        shadowOffsetY: 1,
       },
       label: {
         show: false,