Move static indicator into dev overlay (#68369)
This moves the static indicator we added for the app router into the dev
overlay so it can share the logic/be aware when either are showing to
coordinate position. This also applies similar design to make the look
more consistent as well.
https://github.com/user-attachments/assets/bca899d4-0635-4868-8284-02f0cb4b5444
Closes: NDX-74
