feat: improve Worksmobile tenant sync handling

backend/internal/handler/user_group_handler_test.go

@@ -2,6 +2,7 @@ package handler
 
 import (
 	"baron-sso-backend/internal/domain"
+	"baron-sso-backend/internal/service"
 	"bytes"
 	"context"
 	"encoding/json"
@@ -53,6 +54,8 @@ func (m *MockUserGroupService) List(ctx context.Context, tenantID string) ([]dom
 	return args.Get(0).([]domain.UserGroup), args.Error(1)
 }
 
+func (m *MockUserGroupService) SetWorksmobileSyncer(syncer service.WorksmobileSyncer) {}
+
 func (m *MockUserGroupService) AddMember(ctx context.Context, groupID, userID string) error {
 	return m.Called(ctx, groupID, userID).Error(0)
 }