Fix GitHub sign-in issue with null $lastName

[dylanmichaelryan]

Github doesn't provide a last name.

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For more details, open the Copilot Workspace session.

[hubertkoy]

same with first name @dylanmichaelryan

I would suggest to allow first name of being nullable

?

if both null then name = email?

[dylanmichaelryan]

@hubertkoy

Oh yes, probably if you don't have a name set at all. I think the first and last name fields are optional with WorkOS, so maybe
nulling both of them is good enough?

[hubertkoy]

Well yeah, that should do the job now, only issue people can have it's when both being null, and you trying create user where by default name in User Model it's not null they still would have exception