fix: ConfigCache not copied affer server updates (#1008)

* fix: ConfigCache not copied affer server updates

* fix: server list not updated when dispatching tasks

* improve

* reuse logic

model/server.go

@@ -52,6 +52,7 @@ func (s *Server) CopyFromRunningServer(old *Server) {
 	s.GeoIP = old.GeoIP
 	s.LastActive = old.LastActive
 	s.TaskStream = old.TaskStream
+	s.ConfigCache = old.ConfigCache
 	s.PrevTransferInSnapshot = old.PrevTransferInSnapshot
 	s.PrevTransferOutSnapshot = old.PrevTransferOutSnapshot
 }