[Fix](Job)Fix One-Time type JOB parameter verification error (#30779)

fe/fe-core/src/main/java/org/apache/doris/job/base/JobExecutionConfiguration.java

@@ -92,6 +92,9 @@ public class JobExecutionConfiguration {
         if (timerDefinition.getStartTimeMs() == null) {
             throw new IllegalArgumentException("startTimeMs cannot be null");
         }
+        if (isImmediate()) {
+            return;
+        }
         if (timerDefinition.getStartTimeMs() < System.currentTimeMillis()) {
             throw new IllegalArgumentException("startTimeMs cannot be less than current time");
         }