[3.9] bpo-41384: Raise TclError in tkinter.OptionMenu (GH-21601)

[miss-islington]

... when an unknown option is passed. TypeError was being raised because a 2to3 fix was missing.

Co-authored-by: Terry Jan Reedy tjreedy@udel.edu
(cherry picked from commit f1d40f9)

Co-authored-by: Akuli akuviljanen17@gmail.com

https://bugs.python.org/issue41384

[the-knights-who-say-ni]

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[miss-islington]

@Akuli and @terryjreedy: Status check is done, and it's a success ✅ .