Fix testBadAsyncId (#132705)

Author: idegtiarenko

muted-tests.yml

@@ -462,9 +462,6 @@ tests:
 - class: org.elasticsearch.xpack.ml.integration.AutodetectMemoryLimitIT
   method: testTooManyByAndOverFields
   issue: https://github.com/elastic/elasticsearch/issues/132310
-- class: org.elasticsearch.xpack.esql.action.CrossClusterAsyncQueryIT
-  method: testBadAsyncId
-  issue: https://github.com/elastic/elasticsearch/issues/132353
 - class: org.elasticsearch.xpack.esql.inference.completion.CompletionOperatorTests
   method: testSimpleCircuitBreaking
   issue: https://github.com/elastic/elasticsearch/issues/132382

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/action/EsqlExecutionInfo.java

@@ -124,7 +124,9 @@ public EsqlExecutionInfo(StreamInput in) throws IOException {
     public void writeTo(StreamOutput out) throws IOException {
         out.writeOptionalTimeValue(overallTook);
         if (clusterInfo != null) {
-            out.writeCollection(clusterInfo.values());
+            // .stream().toList() creates an immutable copy of the cluster info entries
+            // as today they might be still changing while serialization is happening
+            out.writeCollection(clusterInfo.values().stream().toList());
         } else {
             out.writeCollection(Collections.emptyList());
         }