[ML] setting require_alias to previous value on bulk index retry (#62103)

Previous work has been done to prevent automatically creating a concrete index when an alias is desired.

This commit addresses a path where this check was not being done.

relates: #62064

x-pack/plugin/ml/qa/native-multi-node-tests/src/javaRestTest/java/org/elasticsearch/xpack/ml/integration/ClassificationIT.java

@@ -618,7 +618,6 @@ public class ClassificationIT extends MlNativeDataFrameAnalyticsIntegTestCase {
         assertEvaluation(ALIAS_TO_NESTED_FIELD, KEYWORD_FIELD_VALUES, "ml." + predictedClassField);
     }
 
-    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/62064")
     public void testTwoJobsWithSameRandomizeSeedUseSameTrainingSet() throws Exception {
         String sourceIndex = "classification_two_jobs_with_same_randomize_seed_source";
         String dependentVariable = KEYWORD_FIELD;

x-pack/plugin/ml/src/internalClusterTest/java/org/elasticsearch/xpack/ml/integration/MlConfigMigratorIT.java

@@ -228,6 +228,7 @@ public class MlConfigMigratorIT extends MlSingleNodeTestCase {
         IndexRequest indexRequest = new IndexRequest(AnomalyDetectorsIndex.jobStateIndexWriteAlias()).id("ml-config")
                 .source(Collections.singletonMap("a_field", "a_value"))
                 .opType(DocWriteRequest.OpType.CREATE)
+                .setRequireAlias(true)
                 .setRefreshPolicy(WriteRequest.RefreshPolicy.IMMEDIATE);
 
         client().index(indexRequest).actionGet();

x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/utils/persistence/ResultsPersisterService.java

@@ -288,6 +288,7 @@ public class ResultsPersisterService {
     private BulkRequest buildNewRequestFromFailures(BulkRequest bulkRequest, BulkResponse bulkResponse) {
         // If we failed, lets set the bulkRequest to be a collection of the failed requests
         BulkRequest bulkRequestOfFailures = new BulkRequest();
+        bulkRequestOfFailures.requireAlias(bulkRequest.requireAlias());
         Set<String> failedDocIds = Arrays.stream(bulkResponse.getItems())
             .filter(BulkItemResponse::isFailed)
             .map(BulkItemResponse::getId)