tweak menu

Author: adolgachev

src/aria/menu/menu.ts

@@ -44,7 +44,7 @@ import {DeferredContent, DeferredContentAware} from '@angular/aria/deferred-cont
   exportAs: 'ngMenuTrigger',
   host: {
     'class': 'ng-menu-trigger',
-    '[attr.tabindex]': 'tabindex()',
+    '[attr.tabindex]': '_pattern.tabindex()',
     '[attr.aria-haspopup]': 'hasPopup()',
     '[attr.aria-expanded]': 'expanded()',
     '[attr.aria-controls]': '_pattern.menu()?.id()',
@@ -75,9 +75,6 @@ export class MenuTrigger<V> {
   /** Whether the menu trigger has a popup. */
   readonly hasPopup = computed(() => this._pattern.hasPopup());
 
-  /** The tabindex of the menu trigger. */
-  readonly tabindex = computed(() => this._pattern.tabindex());
-
   /** The menu trigger ui pattern instance. */
   _pattern: MenuTriggerPattern<V> = new MenuTriggerPattern({
     element: computed(() => this._elementRef.nativeElement),