Use HARD_CODED_MACHINE_LEARNING_MASTER_NODE_TIMEOUT in more places (#120701)

This hard-coded timeout is trappy, but its removal is not as imminent as
`TRAPPY_IMPLICIT_DEFAULT_MASTER_NODE_TIMEOUT` (see #107984). This commit
removes a handful more usages of the trappy timeout bringing us closer
to its removal.

Author: DaveCTurner

x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/MlInitializationService.java

@@ -155,7 +155,7 @@ public void clusterChanged(ClusterChangedEvent event) {
             AnnotationIndex.createAnnotationsIndexIfNecessary(
                 client,
                 event.state(),
-                MasterNodeRequest.TRAPPY_IMPLICIT_DEFAULT_MASTER_NODE_TIMEOUT,
+                MachineLearning.HARD_CODED_MACHINE_LEARNING_MASTER_NODE_TIMEOUT,
                 ActionListener.wrap(r -> isIndexCreationInProgress.set(false), e -> {
                     if (e.getMessage().equals(previousException)) {
                         logger.debug("Error creating ML annotations index or aliases", e);

x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/inference/TrainedModelStatsService.java

@@ -14,7 +14,6 @@
 import org.elasticsearch.action.support.IndicesOptions;
 import org.elasticsearch.action.support.PlainActionFuture;
 import org.elasticsearch.action.support.WriteRequest;
-import org.elasticsearch.action.support.master.MasterNodeRequest;
 import org.elasticsearch.action.update.UpdateRequest;
 import org.elasticsearch.client.internal.OriginSettingClient;
 import org.elasticsearch.cluster.ClusterChangedEvent;
@@ -256,14 +255,14 @@ private void createStatsIndexIfNecessary() {
             client,
             clusterState,
             indexNameExpressionResolver,
-            MasterNodeRequest.TRAPPY_IMPLICIT_DEFAULT_MASTER_NODE_TIMEOUT,
+            MachineLearning.HARD_CODED_MACHINE_LEARNING_MASTER_NODE_TIMEOUT,
             ActionListener.wrap(
                 r -> ElasticsearchMappings.addDocMappingIfMissing(
                     MlStatsIndex.writeAlias(),
                     MlStatsIndex::wrappedMapping,
                     client,
                     clusterState,
-                    MasterNodeRequest.TRAPPY_IMPLICIT_DEFAULT_MASTER_NODE_TIMEOUT,
+                    MachineLearning.HARD_CODED_MACHINE_LEARNING_MASTER_NODE_TIMEOUT,
                     listener,
                     MlStatsIndex.STATS_INDEX_MAPPINGS_VERSION
                 ),