CHAT MSG BG SYSTEM NEUTRAL

Fired for battleground-event messages that are displayed in a faction-neutral color by default. CHAT_MSG_BG_SYSTEM_NEUTRAL: text, playerName, languageName, channelName, playerName2, specialFlags, zoneChannelID, channelIndex, channelBaseName, unused, lineID, guid, bnSenderID, isMobile, isSubtitle, hideSenderInLetterbox, supressRaidIcons