refactor(router): deprecate no longer needed resolver fields (#45597)

DEPRECATED:

The `resolver` argument of the `RouterOutletContract.activateWith` function and the `resolver` field of the `OutletContext` class are deprecated. Passing component factory resolvers are no longer needed. The `ComponentFactoryResolver`-related symbols were deprecated in `@angular/core` package since v13.

PR Close #45597

packages/router/src/directives/router_outlet.ts

@@ -53,6 +53,9 @@ export interface RouterOutletContract {
   activateWith(activatedRoute: ActivatedRoute, environmnetInjector: EnvironmentInjector|null): void;
   /**
    * Called by the `Router` when the outlet should activate (create a component).
+   *
+   * @deprecated Passing a resolver to retrieve a component factory is not required and is
+   *     deprecated since v14.
    */
   activateWith(activatedRoute: ActivatedRoute, resolver: ComponentFactoryResolver|null): void;
 

packages/router/src/router_outlet_context.ts

@@ -20,6 +20,10 @@ import {ActivatedRoute} from './router_state';
 export class OutletContext {
   outlet: RouterOutletContract|null = null;
   route: ActivatedRoute|null = null;
+  /**
+   * @deprecated Passing a resolver to retrieve a component factory is not required and is
+   *     deprecated since v14.
+   */
   resolver: ComponentFactoryResolver|null = null;
   injector: EnvironmentInjector|null = null;
   children = new ChildrenOutletContexts();