fix(member-info): 구서버 멤버정보 누락 필드 하위 호환을 보장한다

app/src/main/java/kr/co/vividnext/sodalive/settings/notification/GetMemberInfoResponse.kt

@@ -21,11 +21,11 @@ data class GetMemberInfoResponse(
     @SerializedName("auditionNotice")
     val auditionNotice: Boolean?,
     @SerializedName("countryCode")
-    val countryCode: String,
+    val countryCode: String? = null,
     @SerializedName("isAdultContentVisible")
-    val isAdultContentVisible: Boolean,
+    val isAdultContentVisible: Boolean? = null,
     @SerializedName("contentType")
-    val contentType: ContentType
+    val contentType: ContentType? = null
 )
 
 enum class MemberRole {