fix(admin-chat-character): JP 리전 캐릭터 등록 성별 값을 일본어로 변환한다

src/main/kotlin/kr/co/vividnext/sodalive/admin/chat/character/AdminChatCharacterController.kt

@@ -206,7 +206,7 @@ class AdminChatCharacterController(
             body["description"] = request.description
             body["region"] = request.region
             request.age?.let { body["age"] = it }
-            request.gender?.let { body["gender"] = it }
+            request.gender?.let { body["gender"] = mapGenderForExternalApi(request.region, it) }
             request.mbti?.let { body["mbti"] = it }
             request.speechPattern?.let { body["speechPattern"] = it }
             request.speechStyle?.let { body["speechStyle"] = it }
@@ -273,6 +273,19 @@ class AdminChatCharacterController(
         }
     }
 
+    private fun mapGenderForExternalApi(region: String, gender: String): String {
+        if (!region.equals("JP", ignoreCase = true)) {
+            return gender
+        }
+
+        return when (gender) {
+            "여성" -> "女性"
+            "남성" -> "男性"
+            "기타" -> "その他"
+            else -> gender
+        }
+    }
+
     /**
      * 캐릭터 수정 API
      * 1. JSON 문자열을 ChatCharacterUpdateRequest 객체로 변환