chore(*): fix failing tests

Author: MonikaKirkova

projects/igniteui-angular/src/lib/grids/cell.component.ts

@@ -1036,7 +1036,7 @@ export class IgxGridCellComponent implements OnInit, OnChanges, OnDestroy, CellT
 
         if (this.selectionService.primaryButton) {
             const currentActive = this.selectionService.activeElement;
-            if (this.cellSelectionMode === GridSelectionMode.single && (event as any).ctrlKey && this.selected) {
+            if (this.cellSelectionMode === GridSelectionMode.single && (event as any)?.ctrlKey && this.selected) {
                 this.selectionService.activeElement = null;
                 shouldEmitSelection = true;
             } else {
@@ -1073,7 +1073,7 @@ export class IgxGridCellComponent implements OnInit, OnChanges, OnDestroy, CellT
         }
         this.selectionService.primaryButton = true;
         if (this.cellSelectionMode === GridSelectionMode.multiple && this.selectionService.activeElement) {
-            if (this.selectionService.isInMap(this.selectionService.activeElement) && (event as any).ctrlKey) {
+            if (this.selectionService.isInMap(this.selectionService.activeElement) && (event as any)?.ctrlKey) {
                 this.selectionService.remove(this.selectionService.activeElement);
                 shouldEmitSelection = true;
             } else {