tweak(ext/cfx-ui): display EOS warning to server owners only

[airbon99]

Goal of this PR

Don't display information most users don't understand and won't act upon.

How is this PR achieving the goal

Hiding server EOS warning from players, displaying it only to server owners.

This PR applies to the following area(s)

Cfx UI

Checklist

• [ ] Code compiles and has been tested successfully.
• [x] Code explains itself well and/or is documented.
• [x] My commit message explains what the changes do and what they are for.
• [x] No extra compilation warnings are added by these changes.