WenQuanYi Micro Hei is a Simplified-oriented face, so keeping it in the Traditional list - even as a
last resort - could still draw Simplified forms, which is the one thing the split is for. Heiti TC
and Hiragino Sans CNS are the macOS Traditional faces the family's own lists use (photocraft's
`CjkScript::TraditionalChinese`). Dropping the entry does not lose the face: the generic scan behind
the script lists still finds it when nothing Traditional is installed.
The test now walks the `FallbackScript::Han` arm as well, so a list wired to the wrong script fails
it, and it refuses a WenQuanYi entry in the Traditional list.
FeiLiuEM
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