[3.15] Use tkinter wrapper methods instead of raw Tcl calls in turtle and IDLE (GH...

[3.15] Use tkinter wrapper methods instead of raw Tcl calls in turtle and IDLE (GH-152414) (GH-152648)

Use tkinter wrapper methods instead of raw Tcl calls in turtle and IDLE (GH-152414)

* turtle: wm_attributes(topmost=...);
* idlelib.macosx: winfo_server();
* idlelib tests: after_info().
(cherry picked from commit fc866dc84ec430ab22d60609520f7ab27267baef)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>