feat(sub): add option to hide server settings in subscription (happ) (#5433)

* feat(settings): add option to hide server settings in subscription

* chore: regenerate codegen and add translations for subHideSettings

- Update frontend/src/generated/{types,schemas,zod,examples}.ts to include
  subHideSettings (bool) in AllSetting and AllSettingView
- Add subHideSettings / subHideSettingsDesc translation keys to all 11
  remaining locales: ar-EG, fa-IR, es-ES, id-ID, ja-JP, pt-BR, uk-UA,
  tr-TR, zh-TW, zh-CN, vi-VN

Co-authored-by: IgorKha <IgorKha@users.noreply.github.com>
Co-authored-by: Sanaei <MHSanaei@users.noreply.github.com>

* fix(sub): add subHideSettings default to settings map

Every other sub* setting has an entry in defaultValueMap; subHideSettings was missing, so GetSubHideSettings hit the 'key not in defaultValueMap' error path on a fresh install (only masked by the false fallback in sub.go). Add the default for consistency.

internal/web/translation/zh-CN.json

@@ -1090,6 +1090,8 @@
       "subEnableRoutingDesc": "在 VPN 客户端中启用路由的全局设置。（僅限 Happ）",
       "subRoutingRules": "路由規則",
       "subRoutingRulesDesc": "VPN 用戶端的全域路由規則。（僅限 Happ）",
+      "subHideSettings": "隐藏服务器设置",
+      "subHideSettingsDesc": "在 VPN 客户端中隐藏查看和编辑服务器配置的功能。（僅限 Happ）",
       "subClashEnableRouting": "启用路由",
       "subClashEnableRoutingDesc": "在生成的 YAML 订阅中包含 Clash/Mihomo 全局路由规则。",
       "subClashRoutingRules": "全局路由规则",