How to freeze Maintenance Work Order from user to modify once status is released

Dear Experts,

We have a requirement to route Maintenance Work Orders to a custom PaaS-based approval process. However, we are facing an issue where users can continue modifying the Work Order even after its status is changed to Released or another custom status and the approval process has been initiated.

For example, when a user releases a Work Order and it is pending for approval in the custom PaaS workflow, the user can still make changes to the Work Order. This is not the desired behavior.

Our requirement is to make the Work Order read-only (or otherwise prevent modifications) once the custom approval process is triggered or the Work Order status changes to