fix(性能测试): 修复性能测试增加响应码断言时dom错误

--bug=1016342 --user=刘瑞斌 【 性能测试】github #17293，性能测试-高级配置中配置了自定义响应码后，errors中仍显示配置的响应码 https://www.tapd.cn/55049933/s/1235052

Closes #17293

backend/src/main/java/io/metersphere/performance/parse/xml/reader/JmeterDocumentParser.java

@@ -31,6 +31,7 @@ public class JmeterDocumentParser implements EngineSourceParser {
     private final static String STRING_PROP = "stringProp";
     private final static String ELEMENT_PROP = "elementProp";
     private final static String BOOL_PROP = "boolProp";
+    private final static String INT_PROP = "intProp";
     private final static String COLLECTION_PROP = "collectionProp";
     private final static String CONCURRENCY_THREAD_GROUP = "com.blazemeter.jmeter.threads.concurrency.ConcurrencyThreadGroup";
     private final static String VARIABLE_THROUGHPUT_TIMER = "kg.apc.jmeter.timers.VariableThroughputTimer";
@@ -547,7 +548,7 @@ public class JmeterDocumentParser implements EngineSourceParser {
     }
 
     private void appendIntProp(Element ele, String name, int value) {
-        Element intProp = ele.addElement(BOOL_PROP);
+        Element intProp = ele.addElement(INT_PROP);
         intProp.addAttribute("name", name);
         intProp.setText(String.valueOf(value));
     }