fix(接口测试): 修复mock匹配xml失败的缺陷

--bug=1040879 --user=王孝刚
【接口测试】Mockl-匹配规则为请求体xml，请求Mock地址时，请求体与匹配规则不匹配依然返回Mock响应
https://www.tapd.cn/55049933/s/1520575

backend/services/api-test/src/main/java/io/metersphere/api/utils/MockServerUtils.java

@@ -46,11 +46,12 @@ public class MockServerUtils {
 
         try {
             if (request instanceof ShiroHttpServletRequest shiroHttpServletRequest) {
+                List<String> contentTypeLists = List.of(MediaType.APPLICATION_JSON_VALUE, MediaType.APPLICATION_XML_VALUE, MediaType.TEXT_XML_VALUE, MediaType.TEXT_PLAIN_VALUE);
                 if (StringUtils.equals(request.getContentType(), MediaType.APPLICATION_OCTET_STREAM_VALUE)) {
                     InputStream inputStream = shiroHttpServletRequest.getRequest().getInputStream();
                     byte[] binaryParams = inputStream.readAllBytes();
                     requestParam.setBinaryParamsObj(binaryParams);
-                } else if (StringUtils.equals(request.getContentType(), MediaType.APPLICATION_JSON_VALUE)) {
+                } else if (contentTypeLists.contains(request.getContentType())) {
                     String inputLine;
                     StringBuilder receiveData = new StringBuilder();
                     try (BufferedReader in = new BufferedReader(new InputStreamReader(