Move server rule creation form to its own page (#34637)

spec/system/admin/rules_spec.rb

@@ -26,6 +26,8 @@ RSpec.describe 'Admin Rules' do
       it 'creates new record with valid attributes' do
         visit admin_rules_path
 
+        click_on I18n.t('admin.rules.add_new')
+
         # Invalid submission
         fill_in 'rule_text', with: ''
         expect { submit_form }