fix: Prepare CSR keyword takes entity_id_pattern, not entity_pattern

Three callers passed entity_pattern=; Robot does not match an unknown named argument, so the whole string was passed positionally and landed in the entity_id slot, injecting "id": "entity_pattern=urn:ngsi-ld:Vehicle:*" (not a valid URI) into the registration's entities. Brokers that URI-validate the entity id reject the registration with 400, failing the setup of D012_01_red, D015_01_inc and D013_02_red.