Add a validation to the scan execution policy cadence
What does this MR do and why?
This MR adds a validation to the scan execution policy cadence to match the cadences we support on the policy editor.
Related to: #454855 (closed)
MR acceptance checklist
Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.
Edited by Marcos Rocha