[Fix](Job)Fix redundant job scheduling by preventing same state trans…

…itions (e.g., RUNNING → RUNNING) (#45495)

### What problem does this PR solve?


In the current job scheduling logic, invalid state transitions (e.g.,
RUNNING to RUNNING) are not filtered, which causes redundant scheduling
during resume operations. This PR adds a check to ensure that jobs
cannot transition to the same state, preventing duplicate scheduling
triggers and improving state consistency.

fe/fe-core/src/main/java/org/apache/doris/job/manager/JobManager.java

@@ -201,9 +201,13 @@ public void alterJobStatus(String jobName, JobStatus jobStatus) throws JobExcept
         for (T a : jobMap.values()) {
             if (a.getJobName().equals(jobName)) {
                 try {
+                    if (jobStatus.equals(a.getJobStatus())) {
+                        throw new JobException("Can't change job status to the same status");
+                    }
                     alterJobStatus(a.getJobId(), jobStatus);
                 } catch (JobException e) {
-                    throw new JobException("unregister job error, jobName:" + jobName);
+                    throw new JobException("Alter job status error, jobName is %s, errorMsg is %s",
+                            jobName, e.getMessage());
                 }
             }
         }

regression-test/suites/job_p0/test_base_insert_job.groovy

@@ -190,6 +190,11 @@ suite("test_base_insert_job") {
         // check job status and succeed task count is 1
         pressJob.size() == 1 && '1' == onceJob.get(0).get(0)
     })
+    assertThrows(Exception) {
+        sql """
+        RESUME JOB where jobName='press'
+    """
+    }
 
     sql """
         DROP JOB IF EXISTS where jobname =  'past_start_time'
@@ -299,12 +304,10 @@ suite("test_base_insert_job") {
         assert e.getMessage().contains("Invalid interval time unit: years")
     }
     // assert interval time unit is -1
-    try {
+    assertThrows(Exception) {
         sql """
             CREATE JOB test_error_starts  ON SCHEDULE every -1 second    comment 'test' DO insert into ${tableName} (timestamp, type, user_id) values ('2023-03-18','1','12213');
         """
-    } catch (Exception e) {
-        assert e.getMessage().contains("expecting INTEGER_VALUE")
     }
 
     // test keyword as job name