Default Team factory to create NR teams with a cutoff date

This is a more accurate depiction of what teams will look like in prod

Jira-Issue: MAV-7080

Author: alistair-white-horne-tng

spec/factories/teams.rb

@@ -68,6 +68,7 @@
       privacy_notice_url { nil }
       privacy_policy_url { nil }
 
+      national_reporting_cut_off_date { Date.new(2025, 11, 1) }
       programmes { [Programme.flu, Programme.hpv] }
     end
 

spec/lib/mavis_cli/teams/set_national_reporting_cut_off_date_spec.rb

@@ -13,7 +13,14 @@
 
     let(:cut_off_date) { Date.new(2026, 2, 1) }
 
-    let(:team) { create(:team, :national_reporting, workgroup: "NR-001") }
+    let(:team) do
+      create(
+        :team,
+        :national_reporting,
+        workgroup: "NR-001",
+        national_reporting_cut_off_date: nil
+      )
+    end
 
     it "sets the cut-off date" do
       expect { command }.to change {