fix(chat): 비로그인 채팅 리스트 응답을 보정한다

src/main/kotlin/kr/co/vividnext/sodalive/v2/chat/controller/ChatRoomListController.kt

@@ -1,8 +1,8 @@
 package kr.co.vividnext.sodalive.v2.chat.controller
 
 import kr.co.vividnext.sodalive.common.ApiResponse
-import kr.co.vividnext.sodalive.common.SodaException
 import kr.co.vividnext.sodalive.member.Member
+import kr.co.vividnext.sodalive.v2.chat.dto.ChatRoomListPageResponse
 import kr.co.vividnext.sodalive.v2.chat.service.ChatRoomListService
 import org.springframework.security.core.annotation.AuthenticationPrincipal
 import org.springframework.web.bind.annotation.GetMapping
@@ -22,7 +22,7 @@ class ChatRoomListController(
         @RequestParam(required = false) cursor: String?,
         @RequestParam(defaultValue = "30") limit: Int
     ) = run {
-        if (member == null) throw SodaException(messageKey = "common.error.bad_credentials")
+        if (member == null) return@run ApiResponse.ok(ChatRoomListPageResponse(emptyList(), false, null))
         ApiResponse.ok(service.getRooms(member, filter, cursor, limit))
     }
 }