Fix broken UI text in selector in dashboard milestones

What does this MR do and why?

Fixes broken UI text in selector in dashboard milestones, which is a regression from !77432 (merged).

Screenshots or screen recordings

before	after
	TBD

How to set up and validate locally

TBD

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Closes #371759 (closed)