fix(restore): append galaxy namespace to type name (#7880)

When restoring from backup taken on version <v21.03, we should append the galaxy namespace to the typename.

worker/restore_map.go

@@ -379,6 +379,7 @@ func (m *mapper) processReqCh(ctx context.Context) error {
 				if err := update.Unmarshal(kv.Value); err != nil {
 					return err
 				}
+				update.TypeName = x.GalaxyAttr(update.TypeName)
 				for _, sch := range update.Fields {
 					sch.Predicate = x.GalaxyAttr(sch.Predicate)
 				}