Gunbuddy fixes

[Superlagg]

[BUGFIX][BALANCING]

About the PR

Purchasing the Guardbuddy ammo manufacturer no longer spawns in a teleport gun instead. My bad.

Attaching the ammofab to a Guardbuddy disables its whitelist, cus otherwise its utterly useless without an emag, then you're 10 TC down with just some dumb robot to show for it.

Removed lawbringer from whitelist, due to potential effortless infinite ammo grenade launcher.

Added pulse rifle to whitelist, due to someone asking why it wasn't there and me agreeing that yeah it should be in there.

Also fixed a typo in the ammofab description. Good thing it was impossible to obtain up until now.

Why's this needed?

It fixes some bugs and oversights that I intentionally put in my code to validate my own existence.

Changelog

(u)Superlagg:
(+)Lawbringer removed from Guardbuddy gun whitelist.
(+)Pulse rifle added to Guardbuddy gun whitelist.
(+)Guardbuddy traitor ammo fabricator now disables the bot's gun whitelist.