Create UI: change person name length rules

Currently, the max person/party length for first name and last name is 20 (for all entity types except firms). This is because COOP and BEN IAs are synced back to COLIN.

Once we stop syncing back to COLIN, the max length needs to be updated to 30.

Ref:
https://github.com/bcgov/business-schemas/blob/main/src/registry_schemas/schemas/party.json
https://github.com/bcgov/business-schemas/blob/main/src/registry_schemas/schemas/person.json

Also check if this applies to Edit UI.

Here is the ticket that explains the 20 char limit:
https://github.com/bcgov/entity/issues/14120