fixup! feat(cdk-experimental/radio): create radio group and button directives

Author: wagnermaciel

src/cdk-experimental/radio/radio.ts

@@ -8,7 +8,6 @@
 
 import {
   afterRenderEffect,
-  AfterViewInit,
   booleanAttribute,
   computed,
   contentChildren,
@@ -104,9 +103,6 @@ export class CdkRadioGroup<V> {
   /** Whether the radio group has received focus yet. */
   private _hasFocused = signal(false);
 
-  /** Whether the radio buttons in the group have been initialized. */
-  private _isViewInitialized = signal(false);
-
   constructor() {
     afterRenderEffect(() => {
       if (!this._hasFocused()) {

src/cdk-experimental/ui-patterns/radio/radio-group.ts

@@ -6,7 +6,7 @@
  * found in the LICENSE file at https://angular.dev/license
  */
 
-import {computed, signal} from '@angular/core';
+import {computed} from '@angular/core';
 import {KeyboardEventManager} from '../behaviors/event-manager/keyboard-event-manager';
 import {PointerEventManager} from '../behaviors/event-manager/pointer-event-manager';
 import {ListFocus, ListFocusInputs} from '../behaviors/list-focus/list-focus';