Re: [PATCH v8 0/1] MR320: riched20/tests: Test for ITextDocument::Undo and ITextDocument::Redo (#53289).

[Jinoh Kang (＠iamahuman)]

v7: rebase
v8: some test enhancements

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https://gitlab.winehq.org/wine/wine/-/merge_requests/320#note_3828