The active world slot is not highlighted when selected via TAB navigation in Realms

Steps to Reproduce:

1. Go to the Realms configuration menu.

2. Cycle through all buttons using the TAB key.

3. Notice that the currently active world slot doesn’t receive any additional highlight.

Observed Behavior:

When pressing the TAB key, the active world slot does not highlight.

Expected Behavior:

When pressing the TAB key, the active world slot should be visibly highlighted to indicate focus.