fix(core/chart): disable mainDataNumberThreshold using zero value if required by xls-report

Author: sara-re

projects/core/chart/src/chart.ts

@@ -60,7 +60,8 @@ export class AjfChartComponent implements AfterViewInit, OnChanges {
    */
   @Input()
   set mainDataNumberThreshold(mainDataNumberThreshold: number | undefined) {
-    this._mainDataNumberThreshold = mainDataNumberThreshold || 10;
+    this._mainDataNumberThreshold =
+      mainDataNumberThreshold || mainDataNumberThreshold === 0 ? mainDataNumberThreshold : 10;
   }
   private _mainDataNumberThreshold: number = 10;
 

projects/core/reports/src/xls-report/xls-report.ts

@@ -246,7 +246,10 @@ function _buildChart(name: string, sheet: {[key: string]: string}[]): AjfWidget
   const beginAtZeroY = boolOption(options['beginAtZeroY']);
   const removeZeroValues =
     options['removeZeroValues'] != null ? Boolean(options['removeZeroValues']) : true;
-  const mainDataNumberThreshold = +options['mainDataNumberThreshold'] || 10;
+  const mainDataNumberThreshold =
+    +options['mainDataNumberThreshold'] || +options['mainDataNumberThreshold'] === 0
+      ? +options['mainDataNumberThreshold']
+      : 10;
 
   const dataset: AjfChartDataset[] = [];
   Object.keys(data).forEach((key, index) => {