fix: handle case where committers already loaded but user revisits
requested to merge oliviergoulet/membership.eclipse.org:fix-committers-contributor-card-reload into main
Resolves part of #606 (closed)
Even though committers and contributors were already fetched, we can't eject out of the useEffect because more data processing has to happen (pick 5 random committers and contributors).
Edited by Olivier Goulet