refactor(cdk/a11y): explicitly add Provider type (#30393)

add `Provider` type to `NOOP_TREE_KEY_MANAGER_FACTORY_PROVIDER` as the
inferred type throws error when running dev-app locally

(cherry picked from commit be74ffe)

Author: naaajii

src/cdk/a11y/key-manager/noop-tree-key-manager.ts

@@ -13,6 +13,7 @@ import {
   TreeKeyManagerItem,
   TreeKeyManagerStrategy,
 } from './tree-key-manager-strategy';
+import {Provider} from '@angular/core';
 
 // NoopTreeKeyManager is a "noop" implementation of TreeKeyMangerStrategy. Methods are noops. Does
 // not emit to streams.
@@ -102,7 +103,7 @@ export function NOOP_TREE_KEY_MANAGER_FACTORY<
  *
  * @breaking-change 21.0.0
  */
-export const NOOP_TREE_KEY_MANAGER_FACTORY_PROVIDER = {
+export const NOOP_TREE_KEY_MANAGER_FACTORY_PROVIDER: Provider = {
   provide: TREE_KEY_MANAGER,
   useFactory: NOOP_TREE_KEY_MANAGER_FACTORY,
 };

tools/public_api_guard/cdk/a11y.md

@@ -17,6 +17,7 @@ import { NgZone } from '@angular/core';
 import { Observable } from 'rxjs';
 import { OnChanges } from '@angular/core';
 import { OnDestroy } from '@angular/core';
+import { Provider } from '@angular/core';
 import { QueryList } from '@angular/core';
 import { Signal } from '@angular/core';
 import { SimpleChanges } from '@angular/core';
@@ -430,10 +431,7 @@ export const MESSAGES_CONTAINER_ID = "cdk-describedby-message-container";
 export function NOOP_TREE_KEY_MANAGER_FACTORY<T extends TreeKeyManagerItem>(): TreeKeyManagerFactory<T>;
 
 // @public @deprecated
-export const NOOP_TREE_KEY_MANAGER_FACTORY_PROVIDER: {
-    provide: InjectionToken<TreeKeyManagerFactory<any>>;
-    useFactory: typeof NOOP_TREE_KEY_MANAGER_FACTORY;
-};
+export const NOOP_TREE_KEY_MANAGER_FACTORY_PROVIDER: Provider;
 
 // @public @deprecated
 export class NoopTreeKeyManager<T extends TreeKeyManagerItem> implements TreeKeyManagerStrategy<T> {