bpo-22703: IDLE: Improve Code Context and Zoom Height menu labels (GH-11214)

The Code Context menu label now toggles between Show/Hide Code Context. 
 The Zoom Height menu now toggles between Zoom/Restore Height. 
 Zoom Height has moved from the Window menu to the Options menu. 

 
https://bugs.python.org/issue22703

Lib/idlelib/codecontext.py

@@ -122,9 +122,13 @@ class CodeContext:
             # thus ensuring that it will appear directly above text_frame.
             self.context.pack(side=TOP, fill=X, expand=False,
                             before=self.editwin.text_frame)
+            menu_status = 'Hide'
         else:
             self.context.destroy()
             self.context = None
+            menu_status = 'Show'
+        self.editwin.update_menu_label(menu='options', index='* Code Context',
+                                       label=f'{menu_status} Code Context')
         return "break"
 
     def get_context(self, new_topvisible, stopline=1, stopindent=0):