fix(性能测试、测试计划): #1007796 #1007758 一键转性能测试会出现csv文件重复的问题、执行测试计划场景没有按照顺序执行的问题

--bug=1007758 --user=宋天阳 【性能测试】性能测试引用带csv文件的场景，csv文件会显示好多次
https://www.tapd.cn/55049933/s/1068040、--bug=1007796 --user=宋天阳
【Github#7579】测试计划中拖拽编排场景用例，只能调整显示顺序，但无法作用于执行顺序
https://www.tapd.cn/55049933/s/1068038

backend/src/main/java/io/metersphere/api/service/APITestService.java

@@ -520,7 +520,6 @@ public class APITestService {
                     //HTTPSamplerProxy， 进行附件转化： 1.elementProp里去掉路径； 2。elementProp->filePath获取路径并读出来
                     attachmentFilePathList.addAll(this.parseAttachmentFileInfo(element));
                 }
-
                 //如果存在证书文件，也要匹配出来
                 attachmentFilePathList.addAll(this.parseAttachmentFileInfo(innerHashTreeElement));
             }
@@ -535,7 +534,10 @@ public class APITestService {
 
         //处理附件
         Map<String, String> attachmentFiles = new HashMap<>();
-
+        //去重处理
+        if(!CollectionUtils.isEmpty(attachmentFilePathList)){
+            attachmentFilePathList = attachmentFilePathList.stream().distinct().collect(Collectors.toList());
+        }
         List<FileMetadata> fileMetadataList = new ArrayList<>();
         for (String filePath: attachmentFilePathList) {
             File file  = new File(filePath);
@@ -555,8 +557,8 @@ public class APITestService {
         return returnDTO;
     }
 
-    private List<String> parseAttachmentFileInfo(Element parentHashTreeElement) {
-        List<String> attachmentFilePathList = new ArrayList<>();
+private List<String> parseAttachmentFileInfo(Element parentHashTreeElement) {
+         List<String> attachmentFilePathList = new ArrayList<>();
         List<Element> parentElementList = parentHashTreeElement.elements();
         for (Element parentElement: parentElementList) {
             String qname = parentElement.getQName().getName();

backend/src/main/java/io/metersphere/base/mapper/ext/ExtTestPlanApiCaseMapper.xml

@@ -24,6 +24,7 @@
     AND t.api_case_id IN (
         SELECT id FROM api_test_case WHERE status IS NULL OR status != 'Trash'
         )
+    ORDER BY `order` DESC
   </select>
   <select id="list" resultType="io.metersphere.api.dto.definition.TestPlanApiCaseDTO">
     select

backend/src/main/java/io/metersphere/base/mapper/ext/ExtTestPlanScenarioCaseMapper.xml

@@ -20,6 +20,7 @@
         AND t.api_scenario_id IN (
             SELECT id FROM api_scenario WHERE status IS NULL OR status != 'Trash'
         )
+    ORDER BY `order` DESC
   </select>
 
   <select id="list" resultType="io.metersphere.api.dto.automation.ApiScenarioDTO">