Refactor UpdateRule method to improve WAF service rule updates

- Modify the UpdateRule method to assign the RuleCategoryStatus directly to the wafService before updating the database.
- Enhance error handling for the database update operation to ensure clarity in failure cases.

internal/service/waf.go

@@ -707,10 +707,11 @@ func (s *wafService) UpdateRule(ctx context.Context, req *RuleRequest) error {
 		}
 	} else {
 		// Update mode if service exists
-		if err := s.db.Model(wafService).Update("rule_category_status", model.RuleCategoryStatus{
+		wafService.RuleCategoryStatus = &model.RuleCategoryStatus{
 			CategoryID: req.CategoryID,
 			Status:     req.Status,
-		}).Error; err != nil {
+		}
+		if err := s.db.Model(wafService).Update("rule_category_status", wafService.RuleCategoryStatus).Error; err != nil {
 			return fmt.Errorf("failed to update WAF service mode: %v", err)
 		}
 	}