fix(languages): disable lazy mode for chinese simplified (@EnormousMush)

[EnormousMush]

Chinese Simplified is the only CJK language missing noLazyMode.

Lazy mode strips diacritics — the accent table in lazy-mode.ts covers Latin,
Arabic, Cyrillic and Greek only, so it can never transform a Han character.
Every other CJK language already accounts for this: chinese_traditional
(all 5 variants), japanese_* (4) and korean_* (3) set noLazyMode: true.
The 5 chinese_simplified* files don't.

The project already draws this distinction correctly elsewhere: #1866 added
tone-mark accents to pinyin*, where lazy mode is meaningful because the
script is romanized (wǒ → wo, ü → v). Han-script languages take the other
branch. Simplified Chinese currently takes neither.

This isn't only cosmetic. Personal bests are bucketed by lazyMode in
db.ts:getLocalPB(), so a Simplified Chinese user with lazy mode on keeps a
separate PB set from one with it off, for identical tests. Traditional Chinese
avoids this because noLazyMode forces the setting off.

Scoped deliberately: several other languages have no accented characters in
their current wordlists, but their scripts do support diacritics (e.g. Cyrillic
ё), so noLazyMode would be wrong for them. Han script is the categorical case.

Verified locally with pnpm dev-fe: on Chinese Simplified, enabling lazy mode
and restarting the test now shows the "does not support lazy mode" notice and
forces the setting off, matching Chinese Traditional. Without the change, the
setting stays enabled.