fix(测试计划): 关联功能用例时的顺序问题

--bug=1010510 --user=李玉号 【测试计划】-关联功能用例后的顺序是倒序，建议按照功能用例显示的顺序关联
https://www.tapd.cn/55049933/s/1108617

backend/src/main/java/io/metersphere/base/mapper/ext/ExtTestCaseMapper.java

@@ -147,6 +147,5 @@ public interface ExtTestCaseMapper {
 
     int addLatestVersion(@Param("refId") String refId);
 
-    @MapKey("id")
-    Map<String, TestCase> getMaintainerMap(@Param("request") QueryTestCaseRequest request);
+    List<TestCase> getMaintainerMap(@Param("request") QueryTestCaseRequest request);
 }

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

@@ -1003,6 +1003,7 @@
         left join test_plan_test_case as T2 on test_case.id=T2.case_id and T2.plan_id =#{request.planId}
         <include refid="notInQueryWhereCondition"/>
         and T2.case_id is null
+        order by test_case.`order` desc, test_case.sort desc
     </select>
 
     <update id="addLatestVersion">

backend/src/main/java/io/metersphere/track/service/TestPlanService.java

@@ -531,19 +531,18 @@ public class TestPlanService {
     }
 
     public void testPlanRelevance(PlanCaseRelevanceRequest request) {
-        Map<String, String> userMap = new HashMap<>();
+        LinkedHashMap<String, String> userMap;
         boolean isSelectAll = request.getRequest() != null && request.getRequest().isSelectAll();
         if (isSelectAll) {
-            Map<String, TestCase> maintainerMap = extTestCaseMapper.getMaintainerMap(request.getRequest());
-            for (String k : maintainerMap.keySet()) {
-                userMap.put(k, maintainerMap.get(k).getMaintainer());
-            }
+            List<TestCase> maintainerMap = extTestCaseMapper.getMaintainerMap(request.getRequest());
+            userMap = maintainerMap.stream()
+                    .collect(LinkedHashMap::new, (m, v) -> m.put(v.getId(), v.getMaintainer()), LinkedHashMap::putAll);
         } else {
             TestCaseExample testCaseExample = new TestCaseExample();
             testCaseExample.createCriteria().andIdIn(request.getIds());
             List<TestCase> testCaseList = testCaseMapper.selectByExample(testCaseExample);
             userMap = testCaseList.stream()
-                    .collect(HashMap::new, (m, v) -> m.put(v.getId(), v.getMaintainer()), HashMap::putAll);
+                    .collect(LinkedHashMap::new, (m, v) -> m.put(v.getId(), v.getMaintainer()), LinkedHashMap::putAll);
         }
 
         SqlSession sqlSession = sqlSessionFactory.openSession(ExecutorType.BATCH);
@@ -555,6 +554,11 @@ public class TestPlanService {
             return;
         }
 
+        // 保持关联顺序
+        if (!isSelectAll) {
+            testCaseIds = request.getIds();
+        }
+
         // 尽量保持与用例顺序一致
         Collections.reverse(testCaseIds);