fix(content): 성인 콘텐츠 설정 동기화와 국가별 인증 분기를 적용한다

SodaLive/Sources/Extensions/UserDefaultsExtension.swift

@@ -25,6 +25,7 @@ enum UserDefaultsKey: String, CaseIterable {
     case notShowingEventPopupId
     case isAdultContentVisible
     case contentPreference
+    case countryCode
     case isAuditionNotification
     case searchChannel
     case marketingPid
@@ -73,7 +74,7 @@ extension UserDefaults {
     
     static func isAdultContentVisible() -> Bool {
         let key = UserDefaultsKey.isAdultContentVisible.rawValue
-        return UserDefaults.standard.object(forKey: key) != nil ? bool(forKey: .isAdultContentVisible) : true
+        return UserDefaults.standard.object(forKey: key) != nil ? bool(forKey: .isAdultContentVisible) : false
     }
     
     static func reset() {