Fix spectators spawning outside of the map

[haykam821]

This pull request includes several fixes to spectator functionality:

• Changes the spawn positions of spectators from (0, 0, 0) to be the same as the waiting lobby spawns
• Fixes spectators not having the correct game mode (caused by the incorrect time being used in spawn calculations)
• Fixes spectators being able to see the leather armor of hiders (caused by bundle packets not being handled by the packet filter)