Selecting an entity should not show the highlight to everyone

[jackTabsCode]

Current behavior

Selecting an entity on the server debugger shows the highlight to everybody.

Proposed improvement

Only the players using the server debugger should see the highlight.

Additional context

This is unfixable for now (I think?) until we either:

• Change the way the server debugger is rendered
• Have a way of knowing who's using it

[LastTalon]

Tracking players using the debugger was added in #57. This should now be doable.

[jackTabsCode]

After further investigation, my PR won't help at all due to the way the debugger is rendered. https://discord.com/channels/1234249974959702056/1234253276216688692/1237167641496387584