feat(nx): upgrade nx 20 and angular 19

apps/angular/55-back-button-navigation/src/app/app.component.ts

@@ -2,7 +2,6 @@ import { Component } from '@angular/core';
 import { RouterLink, RouterOutlet } from '@angular/router';
 
 @Component({
-  standalone: true,
   imports: [RouterOutlet, RouterLink],
   selector: 'app-root',
   templateUrl: './app.component.html',

apps/angular/55-back-button-navigation/src/app/dialog/dialog.component.ts

@@ -11,7 +11,6 @@ import {
 @Component({
   selector: 'app-dialog-dialog',
   templateUrl: './dialog.component.html',
-  standalone: true,
   imports: [
     MatButtonModule,
     MatDialogActions,

apps/angular/55-back-button-navigation/src/app/home/home.component.ts

@@ -3,7 +3,6 @@ import { MatButtonModule } from '@angular/material/button';
 import { RouterLink } from '@angular/router';
 
 @Component({
-  standalone: true,
   imports: [MatButtonModule, RouterLink],
   selector: 'app-home',
   templateUrl: './home.component.html',

apps/angular/55-back-button-navigation/src/app/sensitive-action/sensitive-action.component.ts

@@ -4,7 +4,6 @@ import { MatDialog } from '@angular/material/dialog';
 import { DialogComponent } from '../dialog/dialog.component';
 
 @Component({
-  standalone: true,
   imports: [MatButtonModule],
   selector: 'app-sensitive-action',
   templateUrl: './sensitive-action.component.html',

apps/angular/55-back-button-navigation/src/app/simple-action/simple-action.component.ts

@@ -4,7 +4,6 @@ import { MatDialog } from '@angular/material/dialog';
 import { DialogComponent } from '../dialog/dialog.component';
 
 @Component({
-  standalone: true,
   imports: [MatButtonModule],
   selector: 'app-simple-action',
   templateUrl: './simple-action.component.html',

apps/angular/55-back-button-navigation/src/styles.scss

@@ -6,7 +6,8 @@
 @tailwind components;
 @tailwind utilities;
 
-@include mat.core();
+@include mat.elevation-classes();
+@include mat.app-background();
 
 $theme-primary: mat.m2-define-palette(mat.$m2-indigo-palette);
 $theme-accent: mat.m2-define-palette(mat.$m2-pink-palette, A200, A100, A400);