Core/Chat: Update ChatNotify enum

Port From (https://github.com/TrinityCore/TrinityCore/commit/c6fd88bf3044de44ac01fe9583a3be4142d1e1d9)

Source/Framework/Constants/ChatConst.cs

@@ -45,8 +45,9 @@ namespace Framework.Constants
         NotInLfgNotice = 0x21,           //+ "[%S] You Must Be Queued In Looking For Group Before Joining This Channel."; -- The User Must Be In The Looking For Group System To Join Lfg Chat Channels.
         VoiceOnNotice = 0x22,           //+ "[%S] Channel Voice Enabled By %S.";
         VoiceOffNotice = 0x23,            //+ "[%S] Channel Voice Disabled By %S.";
-        TrialRestricted = 0x24,
-        NotAllowedInChannel = 0x25
+        VoiceOnNoAnnounceNotice = 0x24,           // same as CHAT_VOICE_ON_NOTICE but no chat mode change announcement
+        TrialRestricted = 0x25,           //+ "[%s] Free Trial accounts cannot send messages to this channel. |cffffd000|Hstorecategory:gametime|h[Click To Upgrade]|h|r"
+        NotAllowedInChannel = 0x26            //+ "That operation is not permitted in this channel."
     }
 
     public enum ChannelFlags

Source/Game/Chat/Channels/ChannelAppenders.cs

@@ -677,19 +677,21 @@ namespace Game.Chat
 
     struct VoiceOnAppend : IChannelAppender
     {
-        public VoiceOnAppend(ObjectGuid guid)
+        ChatNotify notificationType;
+        ObjectGuid _guid;
+
+        public VoiceOnAppend(ObjectGuid guid, bool announce = true)
         {
             _guid = guid;
+            notificationType = announce ? ChatNotify.VoiceOnNotice : ChatNotify.VoiceOnNoAnnounceNotice;
         }
 
-        public ChatNotify GetNotificationType() => ChatNotify.VoiceOnNotice;
+        public ChatNotify GetNotificationType() => notificationType;
 
         public void Append(ChannelNotify data)
         {
             data.SenderGuid = _guid;
         }
-
-        ObjectGuid _guid;
     }
 
     struct VoiceOffAppend : IChannelAppender