gh-145736: Fix Tkinter tests for Tk 8.7, 9.0 and 9.1#145738

serhiy-storchaka wants to merge 4 commits intopython:mainpython/cpython:mainfrom

serhiy-storchaka:test-tkinter-8.7serhiy-storchaka/cpython:test-tkinter-8.7Copy head branch name to clipboard