perf: update backend language fallback to en

server/packages/sdk/src/services/lib/i18n/index.ts

@@ -5,8 +5,8 @@ import { crc32 } from 'crc';
 
 i18next.use(Backend).init({
   // initImmediate: false,
-  lng: 'zh-CN',
-  fallbackLng: 'zh-CN',
+  lng: 'en-US',
+  fallbackLng: 'en-US',
   preload: ['zh-CN', 'en-US'],
   ns: ['translation'],
   defaultNS: 'translation',

server/packages/sdk/src/services/lib/i18n/parser.ts

@@ -7,7 +7,7 @@ acceptLanguage.languages(['en-US', 'zh-CN', 'zh', 'zh-TW']);
  * 解析请求头的 Accept-Language
  */
 export function parseLanguageFromHead(
-  headerLanguage = 'zh-CN'
+  headerLanguage = 'en-US'
 ): AllowedLanguage {
   const language = acceptLanguage.get(headerLanguage);