No more scripts in backpacks

[9382]

Instead of inserting scripts into the player, we just make it a server script with client context

Fix notes:

• The Drewfc one was fixed but also disabled since the audio update ruined map music so there's no point having that code run (though I'm keeping it in cause why not)
• The hidden place fix required keeping a map.Destroying check or else the lighting settings bleed into the next map (not a good idea), though it's still a client-context managed script, so its a bit cleaner