[ML][TEST] Clean up jobs in ModelPlotIT

Closes #30377

x-pack/qa/ml-native-tests/src/test/java/org/elasticsearch/xpack/ml/integration/ModelPlotsIT.java

@@ -73,6 +73,7 @@ public class ModelPlotsIT extends MlNativeAutodetectIntegTestCase {
     public void testPartitionFieldWithoutTerms() throws Exception {
         Job.Builder job = jobWithPartitionUser("model-plots-it-test-partition-field-without-terms");
         job.setModelPlotConfig(new ModelPlotConfig());
+        registerJob(job);
         putJob(job);
         String datafeedId = job.getId() + "-feed";
         DatafeedConfig datafeed = newDatafeed(datafeedId, job.getId());
@@ -90,6 +91,7 @@ public class ModelPlotsIT extends MlNativeAutodetectIntegTestCase {
     public void testPartitionFieldWithTerms() throws Exception {
         Job.Builder job = jobWithPartitionUser("model-plots-it-test-partition-field-with-terms");
         job.setModelPlotConfig(new ModelPlotConfig(true, "user_2,user_3"));
+        registerJob(job);
         putJob(job);
         String datafeedId = job.getId() + "-feed";
         DatafeedConfig datafeed = newDatafeed(datafeedId, job.getId());
@@ -107,6 +109,7 @@ public class ModelPlotsIT extends MlNativeAutodetectIntegTestCase {
     public void testByFieldWithTerms() throws Exception {
         Job.Builder job = jobWithByUser("model-plots-it-test-by-field-with-terms");
         job.setModelPlotConfig(new ModelPlotConfig(true, "user_2,user_3"));
+        registerJob(job);
         putJob(job);
         String datafeedId = job.getId() + "-feed";
         DatafeedConfig datafeed = newDatafeed(datafeedId, job.getId());