Fix lua console null output logging

- closes #3810
- fixes bb7f933429

src/BizHawk.Client.EmuHawk/tools/Lua/Libraries/ConsoleLuaLibrary.cs

@@ -103,7 +103,7 @@ namespace BizHawk.Client.EmuHawk
 
 			if (outputs == null || outputs.Length == 0 || (outputs.Length == 1 && outputs[0] is null))
 			{
-				sb.Append($"(no return){terminator}");
+				Tools.LuaConsole.WriteToOutputWindow($"(no return){terminator}");
 				return;
 			}