Add delimiter to label counters

What does this MR do and why?

Follow up to Use CrudComponent for labels lists (!160613 - merged)

Screenshots or screen recordings

I don't know how to test this locally (I don't have that many labels) but I'm assuming it does the following:

Before	After

How to set up and validate locally

Group, Project, and Admin labels lists

Links

• ✂️ UX Paper Cuts 17.3 → Dark mode - Design Support (#452231 - closed)