Ignore chat triggers for interactive ban reason (#2067)

* Ignore chat triggers for interactive ban reason

If the admin types a chat trigger for a command while BaseBans is
waiting for them to type a ban reason, don't treat that message as the
ban reason.

This fixes a problem where the admin decides to cancel their ban with
"!abortban", "/abortban" etc, but ends up accidentally banning the
player with the ban reason "!abortban" (or by attempting to access any
other command via a chat trigger before typing the ban reason).

* Optimize

Check if we're actually waiting for chat reason before calling the native

plugins/basebans.sp

@@ -384,7 +384,7 @@ public Action Command_AbortBan(int client, int args)
 
 public Action OnClientSayCommand(int client, const char[] command, const char[] sArgs)
 {
-	if(playerinfo[client].isWaitingForChatReason)
+	if(playerinfo[client].isWaitingForChatReason && !IsChatTrigger())
 	{
 		playerinfo[client].isWaitingForChatReason = false;
 		PrepareBan(client, playerinfo[client].banTarget, playerinfo[client].banTime, sArgs);