fix(grid-pinning): hide action strip menu after scrolling to row

Author: IMinchev64

projects/igniteui-angular/grids/core/src/grid-actions/grid-pinning-actions.component.ts

@@ -126,6 +126,10 @@ export class IgxGridPinningActionsComponent extends IgxGridActionsBaseDirective
         const context = this.strip.context;
         const grid = context.grid;
         grid.scrollTo(context.data, 0);
+
+        if (this.asMenuItems) {
+            this.strip.hide();
+        }
     }
 
     private registerSVGIcons(): void {