Restore SSG serve logic (#4111)

* Build ssg routes when both the client and server builds are finished

* Fix default server fn encoding

* fix tokio console

* fix ssg

* add prerendering message

* render under the same environment variables as normal

* fix check

* use should_bundle_to_asset

* enable ssg playwright test

* fix clippy

packages/dx-wire-format/src/lib.rs

@@ -91,4 +91,5 @@ pub enum BuildStage {
     Aborted,
     Restarting,
     CompressingAssets,
+    Prerendering,
 }