What does this MR do and why?

Replaces the placeholder value with actual counts based on the allowed descendant types of the work item

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.

Screenshots or screen recordings

Draft frontend is in !162522 (merged)

Related to #474913 (closed)