[issue37335] Add 646 ASCII alias to locale coercion tests.

[Jakub Kulik]

Change by Jakub Kulik <kulikjak at gmail.com>:


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keywords: +patch
pull_requests: +14063
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/11195

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue37335>
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