hotfix : 채팅방 정보 조회 시 호스트 / 참여자 구분

Author: yyytir777

src/main/java/ita/tinybite/domain/chat/service/ChatRoomService.java

@@ -110,8 +110,8 @@ public OneToOneChatRoomDetailResDto getOneToOneRoom(Long chatRoomId) {
 
         User participant = chatRoomMemberRepository.findByChatRoom(chatRoom).stream()
                 .map(ChatRoomMember::getUser)
-                .filter(user -> !user.getUserId().equals(currentUser.getUserId()))
-                .toList().stream().findFirst().get();
+                .filter(user -> !user.getUserId().equals(partyParticipant.getParty().getHost().getUserId()))
+                .findFirst().get();
 
         ChatRoom groupChatRoom = chatRoomRepository.findByPartyAndType(chatRoom.getParty(), ChatRoomType.GROUP).orElseGet(null);
         return OneToOneChatRoomDetailResDto.of(chatRoom.getParty(), partyParticipant, currentUser, groupChatRoom, participant);