Fix ssg race condition (#3521)

* Fix server crash logging and opening fullstack apps

* Fix race condition during SSG

* move route prerendering into a separate stage

* Fix static site generation with dx serve

* only proxy the fullstack server if ssg is disabled

* test nested-suspense with ssg in playwright

packages/cli/src/build/mod.rs

@@ -7,6 +7,7 @@
 
 mod builder;
 mod bundle;
+mod prerender;
 mod progress;
 mod request;
 mod templates;