docs: improve site locale detection (#56618)

* fix(Site): improve changelog header styles and locale detection

* style: fix link and button style conflicts in typography

* style: modify style file

* style: reset typography mixins.ts file

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Co-authored-by: 遇见同学 <1875694521@qq.com>

.dumirc.ts

@@ -160,18 +160,27 @@ export default defineConfig({
       }
 
       // 首页无视链接里面的语言设置 https://github.com/ant-design/ant-design/issues/4552
-      if (pathname === '/' || pathname === '/index-cn') {
+      const normalizedPathname = pathname || '/';
-        const lang =
+      if (normalizedPathname === '/' || normalizedPathname === '/index-cn') {
-          (window.localStorage && localStorage.getItem('locale')) ||
+        let lang;
-          ((navigator.language || navigator.browserLanguage).toLowerCase() === 'zh-cn'
+        if (window.localStorage) {
+          const antLocale = localStorage.getItem('ANT_LOCAL_TYPE_KEY');
+          // 尝试解析 JSON，因为可能是被序列化后存储的 "en-US" / en-US https://github.com/ant-design/ant-design/issues/56606
+          try {
+            lang = antLocale ? JSON.parse(antLocale) : localStorage.getItem('locale');
+          } catch (e) {
+            lang = antLocale ? antLocale : localStorage.getItem('locale');
+          }
+        }
+        lang = lang || ((navigator.language || navigator.browserLanguage).toLowerCase() === 'zh-cn'
             ? 'zh-CN'
             : 'en-US');
         // safari is 'zh-cn', while other browser is 'zh-CN';
-        if ((lang === 'zh-CN') !== isZhCN(pathname)) {
+        if ((lang === 'zh-CN') !== isZhCN(normalizedPathname)) {
-          location.pathname = getLocalizedPathname(pathname, lang === 'zh-CN');
+          location.pathname = getLocalizedPathname(normalizedPathname, lang === 'zh-CN');
         }
       }
-      document.documentElement.className += isZhCN(pathname) ? 'zh-cn' : 'en-us';
+      document.documentElement.className += isZhCN(normalizedPathname) ? 'zh-cn' : 'en-us';
     })();
     `,
   ],