Fix SnapshotBasedIndexRecoveryIT#testSeqNoBasedRecoveryIsUsedAfterPrimaryFailOver (#79997)

Order RecoveryStates to ensure that we get the latest recovery state
to assert that the peer recovery was successful.

Closes #79455
Backport of #79469

Author: fcofdez

x-pack/plugin/snapshot-based-recoveries/src/internalClusterTest/java/org/elasticsearch/xpack/snapshotbasedrecoveries/recovery/SnapshotBasedIndexRecoveryIT.java

@@ -73,6 +73,7 @@
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.Collections;
+import java.util.Comparator;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
@@ -787,7 +788,6 @@ public void testRecoveryConcurrentlyWithIndexing() throws Exception {
         assertDocumentsAreEqual(indexName, numDocs.get());
     }
 
-    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/79455")
     public void testSeqNoBasedRecoveryIsUsedAfterPrimaryFailOver() throws Exception {
         List<String> dataNodes = internalCluster().startDataOnlyNodes(3);
         String indexName = randomAlphaOfLength(10).toLowerCase(Locale.ROOT);
@@ -1391,8 +1391,10 @@ private RecoveryState getLatestPeerRecoveryStateForShard(String indexName, int s
         assertThat(indexRecoveries, notNullValue());
 
         List<RecoveryState> peerRecoveries = indexRecoveries.stream()
+            .filter(recoveryState -> recoveryState.getStage() == RecoveryState.Stage.DONE)
             .filter(recoveryState -> recoveryState.getRecoverySource().equals(RecoverySource.PeerRecoverySource.INSTANCE))
             .filter(recoveryState -> recoveryState.getShardId().getId() == shardId)
+            .sorted(Comparator.comparingLong(o -> o.getTimer().stopTime()))
             .collect(Collectors.toList());
 
         assertThat(peerRecoveries, is(not(empty())));