Bugfix/fix world map chart component (#1871)

* Clone countries before manipulation

* Update changelog

apps/client/src/app/components/world-map-chart/world-map-chart.component.ts

@@ -30,6 +30,9 @@ export class WorldMapChartComponent implements OnChanges, OnDestroy, OnInit {
   public ngOnInit() {}
 
   public ngOnChanges() {
+    // Create a copy before manipulating countries object
+    this.countries = structuredClone(this.countries);
+
     if (this.countries) {
       this.isLoading = true;