Convert "mem-pool" unit test to clar

added gitlab-org#16163 as parent epic

added groupgit maintenancerefactor typemaintenance labels

added devopsdata_access sectioninfrastructure platforms labels

Work in progress via our Outreachy mentor Seyi at 20250117122926.101749-3-kuforiji98@gmail.com.

changed milestone to %Git 2.49

added workflowin dev label

Merged to next via 8d335468 (Merge branch 'sk/unit-tests', 2025-01-28). Closing.

closed

added workflowcomplete label and removed workflowin dev label