[3.13] gh-145144: Add more tests for UserList, UserDict, etc (GH-145145)#146296

serhiy-storchaka merged 1 commit intopython:3.13python/cpython:3.13from

serhiy-storchaka:backport-161329c-3.13serhiy-storchaka/cpython:backport-161329c-3.13Copy head branch name to clipboard