Add support for multilingual rule categories in ListRules method

- Extend ListRules method to handle English and Chinese categories
- Append appropriate category names and descriptions based on selected language
- Ensure consistent response structure for rule group responses

internal/service/waf.go

@@ -900,6 +900,24 @@ func (s *wafService) ListRules(ctx context.Context, regionCode, namespace, gatew
 				})
 			}
 		}
+	} else {
+		for _, category := range ruleCategories {
+			if language == "en" {
+				ruleGroupResp = append(ruleGroupResp, RuleGroupResp{
+					CategoryID:  category.CategoryID,
+					Status:      category.Status,
+					Category:    category.CategoryEN,
+					Description: category.DescriptionEN,
+				})
+			} else {
+				ruleGroupResp = append(ruleGroupResp, RuleGroupResp{
+					CategoryID:  category.CategoryID,
+					Status:      category.Status,
+					Category:    category.CategoryZH,
+					Description: category.DescriptionZH,
+				})
+			}
+		}
 	}
 	return ruleGroupResp, nil
 }