Allow a firm registration (SP/GP), for an user/account that only uses a Last Name

**AS** an end-user
**WHEN** I legally only use a last name
**AND** I do not have a first name
**THEN** I am able to register a firm - SP/GP

**Problem Statement**
- [ ] Client creates a BCROS account with just last name, or with two names entered in the last name, and first name left empty.
- [ ] BCSC allows it.
- [ ] Client proceeds to register a firm, SP/GP
- [ ] The firm registration in this case will break in several places:
a. The completing party has last and first name fields pre-populated with the logged in account details. The fields are mandatory and non-editable. The empty first name field breaks the validation.
b. If the logged-in user turns out to be the proprietor/one of the partners, this validation would break too, as the first name here is also mandatory.

**Proposed Solution**

- [ ] Account is created and login is done based on the information provided:
• Only last name is provided.
- [ ] Completing party name fields will be pre-populated with the logged in account data.
a. No validation enforced, as per point above
b. Read only, same as current.
- [ ] Proprietor/partner names, for a person as a proprietor/partner
a. Both last and first names fields are presented on the screen – current option
b. User fills last name, and leaves first name blank
c. Upon that section’s validation, the user is asked to confirm that legally they only use last name
d. Upon this confirmation the submission is accepted