gh-128062: Fix the font size and shortcut display of the turtledemo menu (GH-128063)

Leave the font of the menu bar the default to keep it consistent with the rest of the world. Display the shortcut keys in the right way, using the 'accelerator' option.
---------

(cherry picked from commit e163e8d)

Co-authored-by: Zhikang Yan <[email protected]>
Co-authored-by: Peter Bierma <[email protected]>
Co-authored-by: Terry Jan Reedy <[email protected]>

Author: 3 people

Lib/turtledemo/__main__.py

@@ -107,7 +107,6 @@
 DONE = 4
 EVENTDRIVEN = 5
 
-menufont = ("Arial", 12, NORMAL)
 btnfont = ("Arial", 12, 'bold')
 txtfont = ['Lucida Console', 10, 'normal']
 
@@ -299,23 +298,21 @@ def makeLoadDemoMenu(self, master):
         for entry in getExampleEntries():
             def load(entry=entry):
                 self.loadfile(entry)
-            menu.add_command(label=entry, underline=0,
-                             font=menufont, command=load)
+            menu.add_command(label=entry, underline=0, command=load)
         return menu
 
     def makeFontMenu(self, master):
         menu = Menu(master, tearoff=0)
-        menu.add_command(label="Decrease (C-'-')", command=self.decrease_size,
-                         font=menufont)
-        menu.add_command(label="Increase (C-'+')", command=self.increase_size,
-                         font=menufont)
+        menu.add_command(label="Decrease", command=self.decrease_size,
+                         accelerator=f"{'Command' if darwin else 'Ctrl'}+-")
+        menu.add_command(label="Increase", command=self.increase_size,
+                         accelerator=f"{'Command' if darwin else 'Ctrl'}+=")
         menu.add_separator()
 
         for size in font_sizes:
             def resize(size=size):
                 self.set_txtsize(size)
-            menu.add_command(label=str(size), underline=0,
-                             font=menufont, command=resize)
+            menu.add_command(label=str(size), underline=0, command=resize)
         return menu
 
     def makeHelpMenu(self, master):
@@ -324,7 +321,7 @@ def makeHelpMenu(self, master):
         for help_label, help_file in help_entries:
             def show(help_label=help_label, help_file=help_file):
                 view_text(self.root, help_label, help_file)
-            menu.add_command(label=help_label, font=menufont, command=show)
+            menu.add_command(label=help_label, command=show)
         return menu
 
     def refreshCanvas(self):

Misc/NEWS.d/next/Library/2024-12-18-10-18-55.gh-issue-128062.E9oU7-.rst

@@ -0,0 +1,2 @@
+Revert the font of :mod:`turtledemo`'s menu bar to its default value and
+display the shortcut keys in the correct position.