fix(@angular-devkit/build-angular): do not process ssr entry-point when running ng serve

The ssr entry-point is not used by vite.

(cherry picked from commit 44f2c4e)

Author: alan-agius4

packages/angular_devkit/build_angular/src/builders/dev-server/vite-server.ts

@@ -68,12 +68,14 @@ export async function* serveWithVite(
     builderName,
   )) as json.JsonObject & BrowserBuilderOptions;
 
-  if (browserOptions.prerender) {
+  if (browserOptions.prerender || browserOptions.ssr) {
     // Disable prerendering if enabled and force SSR.
     // This is so instead of prerendering all the routes for every change, the page is "prerendered" when it is requested.
-    browserOptions.ssr = true;
     browserOptions.prerender = false;
 
+    // Avoid bundling and processing the ssr entry-point as this is not used by the dev-server.
+    browserOptions.ssr = true;
+
     // https://nodejs.org/api/process.html#processsetsourcemapsenabledval
     // eslint-disable-next-line @typescript-eslint/no-explicit-any
     (process as any).setSourceMapsEnabled(true);