[3.11] gh-101100: Define `_tkinter` module to fix references (GH-112382) (#112393)

gh-101100: Define `_tkinter` module to fix references (GH-112382)

Define _tkinter module to fix references
(cherry picked from commit 6b961b8ceaba372b78d03feaceb4837bf7236694)

Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>