fix(angular): back navigation and back-button play better (#15293)

* fix(angular): use location instead of navigateByUrl
Closes #15290

* fix(angular): change router methods

angular/test/testapp/src/app/popover/popover-page.component.ts

@@ -31,7 +31,7 @@ export class PopoverPageComponent {
   async clickMe(event?: Event) {
     const popover = await this.popoverController.create({
       component: PopoverPageToPresent,
-      ev: event
+      event
     });
     return popover.present();
   }

angular/test/testapp/src/app/simple-nav/simple-nav.component.ts

@@ -4,7 +4,7 @@ import { Component } from '@angular/core';
   selector: 'app-nav-page',
   template: `
     <ion-app>
-      <ion-router-outlet stack></ion-router-outlet>
+      <ion-router-outlet></ion-router-outlet>
     </ion-app>
   `
 })