Add move_design ability

app/policies/issue_policy.rb

@@ -33,10 +33,12 @@ class IssuePolicy < IssuablePolicy
     prevent :read_design
     prevent :create_design
     prevent :destroy_design
+    prevent :move_design
   end
 
   rule { locked | moved }.policy do
     prevent :create_design
+    prevent :move_design
     prevent :destroy_design
   end
 end

app/policies/project_policy.rb

@@ -342,6 +342,7 @@ class ProjectPolicy < BasePolicy
     enable :read_alert_management_alert
     enable :update_alert_management_alert
     enable :create_design
+    enable :move_design
     enable :destroy_design
     enable :read_terraform_state
   end
@@ -573,6 +574,7 @@ class ProjectPolicy < BasePolicy
     prevent :read_design_activity
     prevent :create_design
     prevent :destroy_design
+    prevent :move_design
   end
 
   rule { read_package_registry_deploy_token }.policy do

spec/policies/design_management/design_policy_spec.rb

@@ -5,7 +5,7 @@ RSpec.describe DesignManagement::DesignPolicy do
   include DesignManagementTestHelpers
 
   let(:guest_design_abilities) { %i[read_design] }
-  let(:developer_design_abilities) { %i[create_design destroy_design] }
+  let(:developer_design_abilities) { %i[create_design destroy_design move_design] }
   let(:design_abilities) { guest_design_abilities + developer_design_abilities }
 
   let_it_be(:guest) { create(:user) }