fix up computed changes

Author: adolgachev

src/aria/listbox/listbox.ts

@@ -19,12 +19,7 @@ import {
   signal,
   untracked,
 } from '@angular/core';
-import {
-  ComboboxListboxPattern,
-  ListboxPattern,
-  OptionPattern,
-  SignalLike,
-} from '@angular/aria/private';
+import {ComboboxListboxPattern, ListboxPattern, OptionPattern} from '@angular/aria/private';
 import {Directionality} from '@angular/cdk/bidi';
 import {toSignal} from '@angular/core/rxjs-interop';
 import {_IdGenerator} from '@angular/cdk/a11y';
@@ -68,7 +63,7 @@ export class Listbox<V> {
   private readonly _generatedId = inject(_IdGenerator).getId('ng-listbox-', true);
 
   /** A unique identifier for the listbox. */
-  protected id: SignalLike<string> = () => this._generatedId;
+  protected id = () => this._generatedId;
 
   /** A reference to the parent combobox popup, if one exists. */
   private readonly _popup = inject<ComboboxPopup<V>>(ComboboxPopup, {
@@ -223,7 +218,7 @@ export class Option<V> {
   private readonly _generatedId = inject(_IdGenerator).getId('ng-option-', true);
 
   /** A unique identifier for the option. */
-  protected id: SignalLike<string> = () => this._generatedId;
+  protected id = () => this._generatedId;
 
   // TODO(wagnermaciel): See if we want to change how we handle this since textContent is not
   // reactive. See https://github.com/angular/components/pull/30495#discussion_r1961260216.

src/aria/tree/tree.ts

@@ -30,7 +30,6 @@ import {
   TreePattern,
   DeferredContent,
   DeferredContentAware,
-  SignalLike,
 } from '@angular/aria/private';
 import {ComboboxPopup} from '../combobox';
 
@@ -91,7 +90,7 @@ export class Tree<V> {
   private readonly _generatedId = inject(_IdGenerator).getId('ng-tree-', true);
 
   /** A unique identifier for the tree. */
-  protected id: SignalLike<string> = () => this._generatedId;
+  protected id = () => this._generatedId;
 
   /** A reference to the parent combobox popup, if one exists. */
   private readonly _popup = inject<ComboboxPopup<V>>(ComboboxPopup, {