- Add BG_SYSTEM_NEUTRAL/ALLIANCE/HORDE chat types (0x52-0x54) and reclassify
them as SYSTEM in the parser — prevents bogus [Say] prefix on arena/BG
system messages
- Remove fallback [TypeName] bracket for sender-less SAY/YELL/WHISPER messages;
only group-channel types (Party/Guild/Raid/BG) show brackets without a sender
- Remove factionTemplate != 0 guard — units with FT=0 now get setHostile() like
any other unit (defaulting to hostile from the map default), fixing NPCs that
appeared friendly due to unset faction template
- Enable CMSG_LOOT for WotLK type=3 (chest) game objects in addition to
CMSG_GAMEOBJ_USE — fixes Milly's Harvest and other quest gather objects on
AzerothCore WotLK servers