Fix some more stray references to Version (#99298)

server/src/main/java/org/elasticsearch/cluster/metadata/IndexMetadata.java

@@ -2648,7 +2648,7 @@ public class IndexMetadata implements Diffable<IndexMetadata>, ToXContentFragmen
     }
 
     /**
-     * Return the {@link Version} of Elasticsearch that has been used to create an index given its settings.
+     * Return the {@link IndexVersion} of Elasticsearch that has been used to create an index given its settings.
      *
      * @throws IllegalArgumentException if the given index settings doesn't contain a value for the key
      *                                  {@value IndexMetadata#SETTING_VERSION_CREATED}

server/src/main/java/org/elasticsearch/snapshots/RestoreService.java

@@ -10,7 +10,6 @@ package org.elasticsearch.snapshots;
 import org.apache.logging.log4j.Level;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
-import org.elasticsearch.Version;
 import org.elasticsearch.action.ActionListener;
 import org.elasticsearch.action.admin.cluster.snapshots.restore.RestoreSnapshotRequest;
 import org.elasticsearch.action.support.IndicesOptions;
@@ -970,10 +969,10 @@ public class RestoreService implements ClusterStateApplier {
         if (IndexVersion.current().before(snapshotInfo.version())) {
             throw new SnapshotRestoreException(
                 new Snapshot(repository.name(), snapshotInfo.snapshotId()),
-                "the snapshot was created with Elasticsearch version ["
+                "the snapshot was created with index version ["
                     + snapshotInfo.version()
-                    + "] which is higher than the version of this node ["
-                    + Version.CURRENT
+                    + "] which is higher than the version used by this node ["
+                    + IndexVersion.current()
                     + "]"
             );
         }

server/src/main/java/org/elasticsearch/snapshots/SnapshotsService.java

@@ -14,7 +14,6 @@ import org.apache.logging.log4j.Logger;
 import org.elasticsearch.ExceptionsHelper;
 import org.elasticsearch.TransportVersion;
 import org.elasticsearch.TransportVersions;
-import org.elasticsearch.Version;
 import org.elasticsearch.action.ActionListener;
 import org.elasticsearch.action.ActionResponse;
 import org.elasticsearch.action.ActionRunnable;
@@ -2116,8 +2115,9 @@ public class SnapshotsService extends AbstractLifecycleComponent implements Clus
     }
 
     /**
-     * Determines the minimum {@link Version} that the snapshot repository must be compatible with from the current nodes in the cluster
-     * and the contents of the repository. The minimum version is determined as the lowest version found across all snapshots in the
+     * Determines the minimum {@link IndexVersion} that the snapshot repository must be compatible with
+     * from the current nodes in the cluster and the contents of the repository.
+     * The minimum version is determined as the lowest version found across all snapshots in the
      * repository and all nodes in the cluster.
      *
      * @param minNodeVersion minimum node version in the cluster