fix: don't setup extractors in init

fixes: #2660

backend/controller/controller.go

@@ -687,21 +687,14 @@ func (s *Service) Ping(ctx context.Context, req *connect.Request[ftlv1.PingReque
 		return connect.NewResponse(&ftlv1.PingResponse{}), nil
 	}
 
-	// Check if all required deployments are active.
-	modules, err := s.dal.GetActiveDeployments(ctx)
-	if err != nil {
-		return nil, err
-	}
+	//It's not actually ready until it is in the routes table
+	routes := s.routes.Load()
 	var missing []string
-nextModule:
 	for _, module := range s.config.WaitFor {
-		for _, m := range modules {
-			replicas, ok := m.Replicas.Get()
-			if ok && replicas > 0 && m.Module == module {
-				continue nextModule
-			}
+		route, ok := routes[module]
+		if !ok || len(route) == 0 {
+			missing = append(missing, module)
 		}
-		missing = append(missing, module)
 	}
 	if len(missing) == 0 {
 		return connect.NewResponse(&ftlv1.PingResponse{}), nil