Fix RSpec/EmptyLineAfterFinalLetItBe for ee registrations controllers

Contributes to https://gitlab.com/gitlab-org/gitlab/-/issues/325836

.rubocop_manual_todo.yml

@@ -546,8 +546,6 @@ RSpec/EmptyLineAfterFinalLetItBe:
     - ee/spec/controllers/projects/merge_requests_controller_spec.rb
     - ee/spec/controllers/projects/mirrors_controller_spec.rb
     - ee/spec/controllers/projects/threat_monitoring_controller_spec.rb
-    - ee/spec/controllers/registrations/groups_controller_spec.rb
-    - ee/spec/controllers/registrations/projects_controller_spec.rb
     - ee/spec/controllers/subscriptions_controller_spec.rb
     - ee/spec/features/admin/admin_show_new_user_signups_cap_alert_spec.rb
     - ee/spec/features/analytics/group_analytics_spec.rb

ee/spec/controllers/registrations/groups_controller_spec.rb

@@ -78,6 +78,7 @@ RSpec.describe Registrations::GroupsController do
     let_it_be(:trial_form_params) { { trial: 'false' } }
     let_it_be(:trial_onboarding_issues_enabled) { false }
     let_it_be(:trial_onboarding_flow_params) { {} }
+
     let(:signup_onboarding_enabled) { true }
     let(:group_params) { { name: 'Group name', path: 'group-path', visibility_level: Gitlab::VisibilityLevel::PRIVATE, emails: ['', ''] } }
     let(:params) do

ee/spec/controllers/registrations/projects_controller_spec.rb

@@ -54,6 +54,7 @@ RSpec.describe Registrations::ProjectsController do
     subject { post :create, params: { project: params }.merge(trial_onboarding_flow_params) }
 
     let_it_be(:trial_onboarding_flow_params) { {} }
+
     let(:params) { { namespace_id: namespace.id, name: 'New project', path: 'project-path', visibility_level: Gitlab::VisibilityLevel::PRIVATE } }
     let(:signup_onboarding_enabled) { true }