fix: 测试用例导入创建人为空

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

@@ -539,6 +539,7 @@ public class TestCaseService {
             num.set(getNextNum(projectId) + testCases.size());
             testCases.forEach(testcase -> {
                 testcase.setId(UUID.randomUUID().toString());
+                testcase.setCreateUser(SessionUtils.getUserId());
                 testcase.setCreateTime(System.currentTimeMillis());
                 testcase.setUpdateTime(System.currentTimeMillis());
                 testcase.setNodeId(nodePathMap.get(testcase.getNodePath()));