Add missing `packages.cleanup.success` (#28129) (#28132)

Backport #28129 by @wolfogre

Co-authored-by: Jason Song <i@wolfogre.com>

options/locale/locale_en-US.ini

@@ -2876,6 +2876,7 @@ packages.package_manage_panel = Package Management
 packages.total_size = Total Size: %s
 packages.unreferenced_size = Unreferenced Size: %s
 packages.cleanup = Clean up expired data
+packages.cleanup.success = Clean up expired data successfully
 packages.owner = Owner
 packages.creator = Creator
 packages.name = Name