fix(igxForOf): Do not update sizes and states while container is detached from DOM.

Author: MKirova

projects/igniteui-angular/src/lib/directives/for-of/for_of.directive.ts

@@ -893,6 +893,7 @@ export class IgxForOfDirective<T> implements OnInit, OnChanges, DoCheck, OnDestr
     }
 
     protected updateSizes() {
+        if (!this.scrollComponent.nativeElement.isConnected) return;
         const scrollable = this.isScrollable();
         this.recalcUpdateSizes();
         this._applyChanges();