Updated the files.

my-app/node_modules/@schematics/angular/server/files/root/tsconfig.server.json.template

@@ -0,0 +1,14 @@
+/* To learn more about this file see: https://angular.io/config/tsconfig. */
+{
+  "extends": "./<%= tsConfigExtends %>",
+  "compilerOptions": {
+    "outDir": "<%= relativePathToWorkspaceRoot %>/out-tsc/server",
+    "types": [
+      "node"<% if (hasLocalizePackage) { %>,
+      "@angular/localize"<% } %>
+    ]
+  },
+  "files": [
+    "src/main.server.ts"
+  ]
+}

my-app/node_modules/@schematics/angular/server/files/src/app/app.module.server.ts.template

@@ -0,0 +1,14 @@
+import { NgModule } from '@angular/core';
+import { ServerModule } from '@angular/platform-server';
+
+import { AppModule } from './app.module';
+import { AppComponent } from './app.component';
+
+@NgModule({
+  imports: [
+    AppModule,
+    ServerModule,
+  ],
+  bootstrap: [AppComponent],
+})
+export class AppServerModule {}

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

@@ -0,0 +1 @@
+export { AppServerModule as default } from './app/app.module.server';

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

@@ -0,0 +1,11 @@
+import { mergeApplicationConfig, ApplicationConfig } from '@angular/core';
+import { provideServerRendering } from '@angular/platform-server';
+import { appConfig } from './app.config';
+
+const serverConfig: ApplicationConfig = {
+  providers: [
+    provideServerRendering()
+  ]
+};
+
+export const config = mergeApplicationConfig(appConfig, serverConfig);

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

@@ -0,0 +1,7 @@
+import { bootstrapApplication } from '@angular/platform-browser';
+import { AppComponent } from './app/app.component';
+import { config } from './app/app.config.server';
+
+const bootstrap = () => bootstrapApplication(AppComponent, config);
+
+export default bootstrap;