fixup! refactor(@angular/build): use new Angular SSR API

Author: alan-agius4

packages/angular/build/src/builders/application/execute-post-bundle.ts

@@ -52,7 +52,7 @@ export async function executePostBundleSteps(
   const prerenderedRoutes: string[] = [];
 
   const {
-    baseHref,
+    baseHref = '/',
     serviceWorker,
     indexHtmlOptions,
     optimizationOptions,
@@ -148,9 +148,10 @@ export async function executePostBundleSteps(
       // Update the index contents with the app shell under these conditions:
       // - Replace 'index.html' with the app shell only if it hasn't been prerendered yet.
       // - Always replace 'index.csr.html' with the app shell.
+      const filePath = appShellRoute && !indexHasBeenPrerendered ? indexHtmlOptions.output : path;
       additionalHtmlOutputFiles.set(
-        appShellRoute && !indexHasBeenPrerendered ? indexHtmlOptions.output : path,
-        createOutputFile(path, content, BuildOutputFileType.Browser),
+        filePath,
+        createOutputFile(filePath, content, BuildOutputFileType.Browser),
       );
     }
 
@@ -178,7 +179,7 @@ export async function executePostBundleSteps(
       const serviceWorkerResult = await augmentAppWithServiceWorkerEsbuild(
         workspaceRoot,
         serviceWorker,
-        options.baseHref || '/',
+        baseHref,
         options.indexHtmlOptions?.output,
         // Ensure additional files recently added are used
         [...outputFiles, ...additionalOutputFiles],