Add directly connected downstream workers to the worker resource api (#2831)

internal/daemon/controller/handler.go

@@ -247,7 +247,8 @@ func (c *Controller) registerGrpcServices(s *grpc.Server) error {
 		services.RegisterCredentialLibraryServiceServer(s, cl)
 	}
 	if _, ok := currentServices[services.WorkerService_ServiceDesc.ServiceName]; !ok {
-		ws, err := workers.NewService(c.baseContext, c.ServersRepoFn, c.IamRepoFn, c.WorkerAuthRepoStorageFn)
+		ws, err := workers.NewService(c.baseContext, c.ServersRepoFn, c.IamRepoFn, c.WorkerAuthRepoStorageFn,
+			c.downstreamWorkers)
 		if err != nil {
 			return fmt.Errorf("failed to create worker handler service: %w", err)
 		}