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/ar-EG.json

@@ -1090,6 +1090,8 @@
       "subEnableRoutingDesc": "إعداد عام لتمكين التوجيه (Routing) في عميل VPN. (فقط لـ Happ)",
       "subRoutingRules": "قواعد التوجيه",
       "subRoutingRulesDesc": "قواعد التوجيه العامة لعميل VPN. (فقط لـ Happ)",
+      "subHideSettings": "إخفاء إعدادات الخادم",
+      "subHideSettingsDesc": "إخفاء إمكانية عرض وتعديل إعدادات الخادم في عميل VPN. (فقط لـ Happ)",
       "subClashEnableRouting": "تفعيل التوجيه",
       "subClashEnableRoutingDesc": "تضمين قواعد توجيه Clash/Mihomo العامة في اشتراكات YAML المُنشأة.",
       "subClashRoutingRules": "قواعد التوجيه العامة",