fix(core): hide implementation details of ExperimentalPendingTasks (#…

…55516)

The ExperimentalPendingTasks service was accidently exposing one of its
internal fields as a public one. This commit fixes this by marking the
field in question as private.

PR Close #55516

goldens/public-api/core/index.md

@@ -4,7 +4,6 @@
 
 ```ts
 
-import { BehaviorSubject } from 'rxjs';
 import { Observable } from 'rxjs';
 import { SIGNAL } from '@angular/core/primitives/signals';
 import { SignalNode } from '@angular/core/primitives/signals';
@@ -678,8 +677,6 @@ export interface ExistingSansProvider {
 export class ExperimentalPendingTasks {
     add(): () => void;
     // (undocumented)
-    internalPendingTasks: ɵPendingTasks;
-    // (undocumented)
     static ɵfac: i0.ɵɵFactoryDeclaration<ExperimentalPendingTasks, never>;
     // (undocumented)
     static ɵprov: i0.ɵɵInjectableDeclaration<ExperimentalPendingTasks>;

packages/core/src/pending_tasks.ts

@@ -80,7 +80,7 @@ export class PendingTasks implements OnDestroy {
   providedIn: 'root',
 })
 export class ExperimentalPendingTasks {
-  internalPendingTasks = inject(PendingTasks);
+  private internalPendingTasks = inject(PendingTasks);
   /**
    * Adds a new task that should block application's stability.
    * @returns A cleanup function that removes a task when called.