Update Certificate::tl to handle default flags

Author: EmelyanenkoK

overlay/overlay-manager.cpp

@@ -598,8 +598,12 @@ BroadcastCheckResult Certificate::check(PublicKeyHash node, OverlayIdShort overl
 }
 
 tl_object_ptr<ton_api::overlay_Certificate> Certificate::tl() const {
-  return create_tl_object<ton_api::overlay_certificate>(issued_by_.get<PublicKey>().tl(), expire_at_, max_size_,
-                                                        signature_.clone_as_buffer_slice());
+  if (flags_ == cert_default_flags(max_size_)) {
+    return create_tl_object<ton_api::overlay_certificate>(issued_by_.get<PublicKey>().tl(), expire_at_, max_size_,
+                                                          signature_.clone_as_buffer_slice());
+  }
+  return create_tl_object<ton_api::overlay_certificateV2>(issued_by_.get<PublicKey>().tl(), expire_at_, max_size_, flags_,
+                                                          signature_.clone_as_buffer_slice());
 }
 
 tl_object_ptr<ton_api::overlay_Certificate> Certificate::empty_tl() {