Add Locator Bar to Server Properties

The Locator Bar added in Java 1.21.6 is always enabled by default on any multiplayer server/ LAN worlds. Disabling this feature is one of the first things I do when I make a new multiplayer world, I suggest that it instead get added as an option to the server.properties file. We could then decide for any world created in that server to have the locator bar disabled by default. The gamerule could still exist to turn it back on at any time, but this option would prevent the need to always have to disable it first.