chore(*): Use visibleColumns instead to get lengthj of columns.

Author: skrustev

projects/igniteui-angular/src/lib/grids/grid-base.directive.ts

@@ -5642,7 +5642,7 @@ export class IgxGridBaseDirective extends DisplayDensityBase implements
     }
 
     /**
-     * Navigates to a posution in the grid based on provided `rowindex` and `visibleColumnIndex`.
+     * Navigates to a position in the grid based on provided `rowindex` and `visibleColumnIndex`.
      * @remarks
      * Also can execute a custom logic over the target element,
      * through a callback function that accepts { targetType: GridKeydownTargetType, target: Object }

projects/igniteui-angular/src/lib/grids/grid-navigation.service.ts

@@ -301,7 +301,7 @@ export class IgxGridNavigationService {
     }
 
     public shouldPerformHorizontalScroll(visibleColIndex: number, rowIndex = -1) {
-        if (visibleColIndex < 0 || visibleColIndex > this.grid.columnList.length - 1) { return false; }
+        if (visibleColIndex < 0 || visibleColIndex > this.grid.visibleColumns.length - 1) { return false; }
         if (rowIndex < 0 || rowIndex > this.grid.dataView.length - 1) {
             return !this.isColumnFullyVisible(visibleColIndex);
         }