Geo Admin UI visual improvements

What does this MR do and why?

Addresses feedback for minor visual improvements in the updated Geo Admin UI. See #336083 (closed) and #332607 (closed)

This MR:

• Removes the Play icon
• Restyles the time record for better consistency. (gray-500 and Regular-small style)
• Reduces the Replication Details margin between the text and question mark icon

Screenshots or screen recordings

Before	After

How to set up and validate locally

1. Have GDK set-up with an enabled GDK Geo site
2. Navigate to Admin > Geo > Sites
3. Verify that the UI style matches the "after" screenshot.

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.