Implemented the ability to reject workflow signatures by adding necessary templates, routes, and authorization checks. Updated the `WorkflowSignatureCancelController` to handle rejection and modified existing templates and translations to support the new feature.
Added functionality to cancel signatures in workflow, including controller, view, and tests. Updated translations and adjusted templates to support and display cancellation actions.
Implemented a Voter to enforce permissions on signature steps, ensuring only authorized users can sign steps. Updated relevant controllers and templates to reflect these permissions, and added corresponding tests to validate the changes.
