Fix: Resolve NameError for Optional in MenuBar

- Added 'Optional' to the import list from the 'typing' module in menu_bar.py
  to resolve a NameError when using Optional as a type hint.

menu_bar.py

@@ -6,10 +6,10 @@ from functools import partial
 from pathlib import Path
 from tkinter import ttk
 import typing
+from typing import Any, Callable, Optional
 
 if typing.TYPE_CHECKING:
     from tkinter import BooleanVar
-    from typing import Any, Callable
 
 from .logger import app_logger
 from .common_tools import ConfigManager, Tooltip, message_box_animation