Fix iteration state when building iterations in advance

When building iterations in advance for a given cadence we do
create iterations using bulk insert, so we do skip some callbacks
because of that we need to compute the iteration state before
inserting.

ee/app/services/iterations/cadences/create_iterations_in_advance_service.rb

@@ -66,6 +66,7 @@ def build_iteration(cadence, next_start_date, iteration_number, iid)
           group_id: cadence.group_id,
           start_date: start_date,
           due_date: due_date,
+          state_enum: Iteration::STATE_ENUM_MAP[::Iteration.compute_state(start_date, due_date)],
           title: title,
           description: description
         }

ee/spec/services/iterations/cadences/create_iterations_in_advance_service_spec.rb

@@ -173,6 +173,12 @@
                   "Iteration 5: #{(initial_due_date + 1.week + 1.day).strftime(Date::DATE_FORMATS[:long])} - #{(initial_due_date + 2.weeks).strftime(Date::DATE_FORMATS[:long])}"
                 ])
               end
+
+              it 'sets the states correctly based on iterations dates' do
+                subject
+
+                expect(group.reload.iterations.order(:start_date).map(&:state)).to eq(%w[closed closed current upcoming upcoming])
+              end
             end
           end
         end