Revert "fix(router): RouterLinkActive should update its state right after checking the children (#19449)"

This reverts commit c569b75249.
As it was synched together with 5a9ed2de27
which broke an internal test.

packages/router/test/regression_integration.spec.ts

@@ -7,9 +7,8 @@
  */
 
 import {CommonModule} from '@angular/common';
-import {Component, ContentChild, NgModule, TemplateRef, Type, ViewChild, ViewContainerRef} from '@angular/core';
+import {Component, NgModule, Type} from '@angular/core';
 import {ComponentFixture, TestBed, fakeAsync, tick} from '@angular/core/testing';
-import {getDOM} from '@angular/platform-browser/src/dom/dom_adapter';
 import {Router} from '@angular/router';
 import {RouterTestingModule} from '@angular/router/testing';
 
@@ -57,56 +56,6 @@ describe('Integration', () => {
          instance.show = true;
          expect(() => advance(fixture)).not.toThrow();
        }));
-
-    it('should set isActive right after looking at its children -- #18983', fakeAsync(() => {
-         @Component({
-           template: `
-          <div #rla="routerLinkActive" routerLinkActive>
-            isActive: {{rla.isActive}}
-            
-            <ng-template let-data>
-              <a [routerLink]="data">link</a>
-            </ng-template>
-
-            <ng-container #container></ng-container>
-          </div>
-        `
-         })
-         class ComponentWithRouterLink {
-           @ViewChild(TemplateRef) templateRef: TemplateRef<any>;
-           @ViewChild('container', {read: ViewContainerRef}) container: ViewContainerRef;
-
-           addLink() {
-             this.container.createEmbeddedView(this.templateRef, {$implicit: '/simple'});
-           }
-
-           removeLink() { this.container.clear(); }
-         }
-
-         @Component({template: 'simple'})
-         class SimpleCmp {
-         }
-
-         TestBed.configureTestingModule({
-           imports: [RouterTestingModule.withRoutes([{path: 'simple', component: SimpleCmp}])],
-           declarations: [ComponentWithRouterLink, SimpleCmp]
-         });
-
-         const router: Router = TestBed.get(Router);
-         const fixture = createRoot(router, ComponentWithRouterLink);
-         router.navigateByUrl('/simple');
-         advance(fixture);
-
-         fixture.componentInstance.addLink();
-         fixture.detectChanges();
-
-         fixture.componentInstance.removeLink();
-         advance(fixture);
-         advance(fixture);
-
-         expect(fixture.nativeElement.innerHTML).toContain('isActive: false');
-       }));
-
   });
 
 });