move RentLuaSession management out of LuaFileList and into LuaConsole, this is a presentation concern

src/BizHawk.Client.Common/lua/LuaFileList.cs

@@ -103,9 +103,6 @@ namespace BizHawk.Client.Common
 					}
 				}
 
-				Global.Config.RecentLuaSession.Add(path);
-				ForEach(lua => Global.Config.RecentLua.Add(lua.Path));
-
 				_filename = path;
 				LoadCallback?.Invoke();
 

src/BizHawk.Client.EmuHawk/tools/Lua/LuaConsole.cs

@@ -519,6 +519,12 @@ namespace BizHawk.Client.EmuHawk
 			UpdateDialog();
 			LuaImp.ScriptList.Changes = false;
 
+			Config.RecentLuaSession.Add(path);
+			foreach (var script in LuaImp.ScriptList)
+			{
+				Config.RecentLua.Add(script.Path);
+			}
+
 			return result;
 		}