fix: 어드민 / 참가자 포털에서 로그인 실패를 수정

Author: MU-Software

app/admin_api/views/user.py

@@ -61,7 +61,7 @@ def signin(self, request: request.Request, *args: tuple, **kwargs: dict) -> resp
         serializer = UserAdminSignInSerializer(data=request.data)
         serializer.is_valid(raise_exception=True)
 
-        login(request=request, user=serializer.user)
+        login(request=request, user=serializer.user, backend="django.contrib.auth.backends.ModelBackend")
         return response.Response(data=UserAdminSerializer(serializer.user).data)
 
     @extend_schema(tags=[OpenAPITag.ADMIN_ACCOUNT], responses={status.HTTP_204_NO_CONTENT: None})

app/participant_portal_api/views/user.py

@@ -61,7 +61,7 @@ def signin(self, request: request.Request, *args: tuple, **kwargs: dict) -> resp
         serializer = UserPortalSignInSerializer(data=request.data)
         serializer.is_valid(raise_exception=True)
 
-        login(request=request, user=serializer.user)
+        login(request=request, user=serializer.user, backend="django.contrib.auth.backends.ModelBackend")
         return response.Response(data=UserPortalSerializer(serializer.user).data)
 
     @extend_schema(tags=[OpenAPITag.PARTICIPANT_PORTAL_USER], responses={status.HTTP_204_NO_CONTENT: None})