sc-builder does not allow to use some names that match \.\.connector_\d+

[kilativ-dotcom]

Describe the bug
sc-builder uses local identifiers for connectors therefore if I use identifier like ..connector_5 it will be sometimes treated as a connector

To Reproduce
Steps to reproduce the behavior:

1. Build scs that has content

sc_node_class
-> concept_among_us;
-> concept_2;
-> concept_3;
-> concept_4;
-> concept_5;;
concept_2 -> something_in_concept_2;;

..connector_5 <- concept_among_us;;

3. Run sc-machine+sc-web
4. Open semantic neighborhood of concept_among_us
5. See connector into something_in_concept_2 belong to concept_among_us

Expected behavior
Some node will belong to concept_among_us instead of connector.

Screenshots

Desktop (please complete the following information):

• OS: Ubuntu 22.04