Sync snippet fixes and modernization to all translations

#265 fixes broken native snippets and #266 modernizes the guide for evergreen browsers. Both update README.md and README.zh-CN.md only. The other translations still contain code that throws or behaves differently from jQuery.

Help from native speakers is very welcome. One PR per translation keeps review manageable.

Translations to update

• README.ko-KR.md (한국어)
• README.zh-TW.md (正體中文)
• README-my.md (Bahasa Melayu)
• README-id.md (Bahasa Indonesia)
• README.pt-BR.md (Português)
• README-vi.md (Tiếng Việt)
• README-es.md (Español)
• README-ru.md (Русский)
• README-kg.md (Кыргызча)
• README-tr.md (Türkçe)
• README-it.md (Italiano)
• README-fr.md (Français)
• README-ja.md (日本語)
• README-pl.md (Polski)

Comment below with the file you're taking so work isn't duplicated.

How to do it

1. Start from master after #265 and #266 are merged.
2. Use the English README as the source of truth. See what changed:
   bash复制

   git diff c4e00b3 master -- README.md

   README.zh-CN.md in the same diff shows how the changes map onto an older translation with a different structure.
3. Code blocks must match English exactly. Only comments inside code may be translated. Keep the // jQuery / // Native labels.
4. Translations have drifted: some sections are missing, and variable names differ. Apply the same intent per section. Don't add sections the translation never had unless you want to.
5. Run npm test if you touch anything outside README files (Node.js 22.12+).

What to look for

Bugs (#265). These throw or give wrong results. Please fix them even if you skip the rest:

Section	Wrong	Right
1.5 nextAll / prevAll	loop over nextSibling / previousSibling	nextElementSibling / previousElementSibling
3.4 / 3.5 append, prepend	ES6 append('<div>…</div>') described as parsing HTML	strings are inserted as text; use insertAdjacentHTML
3.9 clone	el.cloneNode()	el.cloneNode(true)
5.3 Trigger	const event inside if/else	declare once, bubbles: true
6.1 inArray	indexOf(item) > -1 described as returning index	indexOf(item) returns index
6.1 isPlainObject	typeof obj !== 'object' || obj.nodeType … (throws on null)	prototype check
6.3 globalEval	$.globaleval	$.globalEval
6.4 parseHTML	return context.body.children	Array.from(context.body.childNodes)
7.3 Deferred	const defer = defer()	rename variable, or Promise.withResolvers()
8.3 fadeOut	`opacity ${ms} ms`	el.animate(...) (see #266)
8.8 animate	'all ' + speed	el.animate(...) (see #266)

Also check for 'beforebegin ' with a trailing space and .then([a, b] => {}) without parentheses.

Modernization (#266):

• remove IE10 fallbacks
• new sections 4.0–4.0.2, 5.1.1, 5.1.2
• async/await variants
• Web Animations API
• browser support table