Closes: #14510

Description

This pull request updates how we convert the full name of a customer from wc-analytics/customers response to first and last name to match the Android implementation wordpress-mobile/WordPress-FluxC-Android#3113.

Before this PR, we were considering the last word to be the last name and the rest goes to the first name. It was implemented this way to account for middle name in the first name, but doesn't work when there were multiple words in the last name. Example:

Full Name : Firstname and a very long last name
First name : Firstname and a very long last
Last name : name

After this PR, we are considering first word to be the first name and all other words as last name. Example:

Full Name : Firstname and a very long last name
First name : Firstname
Last name : and a very long last name

I wasn't a fan of this solution to assume the first name just has the word before the first space but a few alternatives didn't work. I first tried PersonNameComponentsFormatter and formatter.personNameComponents(from: customer.name) to see if we can have a more localizable version, but it doesn't work well because core always adds a space between the first and last name for the customer name in this wc-analytics/customers endpoint. I also tried using the wc/v3/customers endpoint, but the response just had a small subset of customers compared to the one we use and didn't dig deeper. At this point, I think it's better to main platform consistency and consider using the core endpoint that provides first/last names in the future.

Changes to name component handling:

• Yosemite/Yosemite/Model/Storage/Customer+ReadOnlyConvertible.swift: Updated the logic to assign the first component of the name to firstName and the rest to lastName, matching the behavior of the Android implementation.

Steps to reproduce

Prerequisite: the store has a customer with a first name and multiple words in the last name (note: I noticed that when creating an order with a new customer, the customer only appears in the customer list after a minute or so).

• Go to the orders tab
• Tap + to create order
• Tap Add Customer Details
• Search or scroll down the list to find and select the customer in the prerequisite
• Tap to edit the customer --> the first name should just has the first word in the full name, and the rest of the words in the full name goes to the last name

Testing information

Screenshots

before	after

• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

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