fix(接口测试): 解决swagger接口导入丢失数据问题

--user=郭雨琦
https://www.tapd.cn/55049933/bugtrace/bugs/view/1155049933001016219

backend/src/main/java/io/metersphere/api/dto/definition/parse/Swagger3Parser.java

@@ -380,7 +380,12 @@ public class Swagger3Parser extends SwaggerAbstractParser {
             Object propertiesResult = parseSchemaPropertiesToJson(schema, refSet, infoMap);
             return propertiesResult == null ? getDefaultValueByPropertyType(schema) : propertiesResult;
         } else {
-            return getDefaultValueByPropertyType(schema);
+            if (MapUtils.isNotEmpty(schema.getProperties())) {
+                Object propertiesResult = parseSchemaPropertiesToJson(schema, refSet, infoMap);
+                return propertiesResult == null ? getDefaultValueByPropertyType(schema) : propertiesResult;
+            } else {
+                return getDefaultValueByPropertyType(schema);
+            }
         }
     }