Updated the files.

my-app/node_modules/@schematics/angular/application/files/standalone-files/src/app/app.component.spec.ts.template

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+import { TestBed } from '@angular/core/testing';
+import { AppComponent } from './app.component';
+
+describe('AppComponent', () => {
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      imports: [AppComponent],
+    }).compileComponents();
+  });
+
+  it('should create the app', () => {
+    const fixture = TestBed.createComponent(AppComponent);
+    const app = fixture.componentInstance;
+    expect(app).toBeTruthy();
+  });
+
+  it(`should have the '<%= name %>' title`, () => {
+    const fixture = TestBed.createComponent(AppComponent);
+    const app = fixture.componentInstance;
+    expect(app.title).toEqual('<%= name %>');
+  });
+
+  it('should render title', () => {
+    const fixture = TestBed.createComponent(AppComponent);
+    fixture.detectChanges();
+    const compiled = fixture.nativeElement as HTMLElement;
+    expect(compiled.querySelector('h1')?.textContent).toContain('Hello, <%= name %>');
+  });
+});

my-app/node_modules/@schematics/angular/application/files/standalone-files/src/app/app.component.ts.template

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+import { Component } from '@angular/core';<% if(routing) { %>
+import { RouterOutlet } from '@angular/router';<% } %>
+
+@Component({
+  selector: '<%= selector %>',
+  standalone: true,
+  imports: [<% if(routing) { %>RouterOutlet<% } %>],<% if(inlineTemplate) { %>
+  template: `
+    <h1>Welcome to {{title}}!</h1>
+
+    <% if (routing) {
+     %><router-outlet /><%
+    } %>
+  `,<% } else { %>
+  templateUrl: './app.component.html',<% } if(inlineStyle) { %>
+  styles: [],<% } else { %>
+  styleUrl: './app.component.<%= style %>'<% } %>
+})
+export class AppComponent {
+  title = '<%= name %>';
+}

my-app/node_modules/@schematics/angular/application/files/standalone-files/src/app/app.config.ts.template

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+import { ApplicationConfig } from '@angular/core';<% if (routing) { %>
+import { provideRouter } from '@angular/router';
+
+import { routes } from './app.routes';<% } %>
+
+export const appConfig: ApplicationConfig = {
+  providers: [<% if (routing) { %>provideRouter(routes)<% } %>]
+};

my-app/node_modules/@schematics/angular/application/files/standalone-files/src/app/app.routes.ts.template

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+import { Routes } from '@angular/router';
+
+export const routes: Routes = [];

my-app/node_modules/@schematics/angular/application/files/standalone-files/src/main.ts.template

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+import { bootstrapApplication } from '@angular/platform-browser';
+import { appConfig } from './app/app.config';
+import { AppComponent } from './app/app.component';
+
+bootstrapApplication(AppComponent, appConfig)
+  .catch((err) => console.error(err));