[Fix-13828][api] Fix the problem of work groups have two defult records (#13829)

dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/service/impl/WorkerGroupServiceImpl.java

@@ -292,9 +292,9 @@ public class WorkerGroupServiceImpl extends BaseServiceImpl implements WorkerGro
         } else {
             workerGroups = workerGroupMapper.queryAllWorkerGroup();
         }
-        Optional<Boolean> containDefaultWorkerGroups = workerGroups.stream()
+        boolean containDefaultWorkerGroups = workerGroups.stream()
-                .map(workerGroup -> Constants.DEFAULT_WORKER_GROUP.equals(workerGroup.getName())).findAny();
+                .anyMatch(workerGroup -> Constants.DEFAULT_WORKER_GROUP.equals(workerGroup.getName()));
-        if (!containDefaultWorkerGroups.isPresent() || !containDefaultWorkerGroups.get()) {
+        if (!containDefaultWorkerGroups) {
             // there doesn't exist a default WorkerGroup, we will add all worker to the default worker group.
             Set<String> activeWorkerNodes = registryClient.getServerNodeSet(NodeType.WORKER);
             WorkerGroup defaultWorkerGroup = new WorkerGroup();