bpo-46996: Remove support of Tcl/Tk < 8.5.12 (GH-31839)

Doc/library/tkinter.ttk.rst

Doc/whatsnew/3.11.rst

Lib/test/test_tcl.py

Lib/tkinter/test/test_tkinter/test_geometry_managers.py

Lib/tkinter/test/test_tkinter/test_widgets.py

Lib/tkinter/test/test_ttk/test_widgets.py

Lib/tkinter/test/widget_tests.py

Lib/tkinter/ttk.py

...EWS.d/next/Build/2022-03-12-18-09-31.bpo-46996.SygzVz.rst

Modules/_tkinter.c