[Bug-12963] [Master] Fix dependent task node null pointer exception (#12965)

* Fix that there are both manual and scheduled workflow instances in dependent nodes, and one of them will report a null pointer exception during execution.

dolphinscheduler-master/src/main/java/org/apache/dolphinscheduler/server/master/utils/DependentExecute.java

@@ -205,8 +205,8 @@ public class DependentExecute {
             return lastManualProcess;
         }
 
-        return (lastManualProcess.getEndTime().after(lastSchedulerProcess.getEndTime())) ? lastManualProcess
-                : lastSchedulerProcess;
+        // In the time range, there are both manual and scheduled workflow instances, return the last workflow instance
+        return lastManualProcess.getId() > lastSchedulerProcess.getId() ? lastManualProcess : lastSchedulerProcess;
     }
 
     /**