feat(platform-server): add API to render Module and ModuleFactory to string (#14381)

- PlatformState provides an interface to serialize the current Platform State as a string or Document.

- renderModule and renderModuleFactory are convenience methods to wait for Angular Application to stabilize and then render the state to a string.

- refactor code to remove defaultDoc from DomAdapter and inject DOCUMENT where it's needed.

modules/@angular/core/src/di/reflective_provider.ts

@@ -223,7 +223,7 @@ function _extractToken(
 
   if (!Array.isArray(metadata)) {
     if (metadata instanceof Inject) {
-      return _createDependency(metadata.token, optional, null);
+      return _createDependency(metadata['token'], optional, null);
     } else {
       return _createDependency(metadata, optional, null);
     }
@@ -238,7 +238,7 @@ function _extractToken(
       token = paramMetadata;
 
     } else if (paramMetadata instanceof Inject) {
-      token = paramMetadata.token;
+      token = paramMetadata['token'];
 
     } else if (paramMetadata instanceof Optional) {
       optional = true;