feat(router): add urlUpdateStrategy allow updating the browser URL at the beginning of navigation (#24820)

Fixes #24616

PR Close #24820

tools/public_api_guard/router/router.d.ts

@@ -121,6 +121,7 @@ export interface ExtraOptions {
     preloadingStrategy?: any;
     scrollOffset?: [number, number] | (() => [number, number]);
     scrollPositionRestoration?: 'disabled' | 'enabled' | 'top';
+    urlUpdateStrategy?: 'deferred' | 'eager';
     useHash?: boolean;
 }
 
@@ -323,6 +324,7 @@ export declare class Router {
     readonly routerState: RouterState;
     readonly url: string;
     urlHandlingStrategy: UrlHandlingStrategy;
+    urlUpdateStrategy: 'deferred' | 'eager';
     constructor(rootComponentType: Type<any> | null, urlSerializer: UrlSerializer, rootContexts: ChildrenOutletContexts, location: Location, injector: Injector, loader: NgModuleFactoryLoader, compiler: Compiler, config: Routes);
     createUrlTree(commands: any[], navigationExtras?: NavigationExtras): UrlTree;
     dispose(): void;