feat: make all member fields optional, so member creation can be continued later

lib/accounts/user/member_creation_notifier.ex

@@ -24,8 +24,6 @@ defmodule Mv.Accounts.User.MemberCreationNotifier do
 
   defp create_member_for_user(user) do
     member_attrs = %{
-      first_name: "User",
-      last_name: "Generated",
       member_email: user.email
     }
 
@@ -40,4 +38,4 @@ defmodule Mv.Accounts.User.MemberCreationNotifier do
         :ok
     end
   end
-end 
+end