Increase await timeout for testCancelFailedSearchWhenPartialResultDisallowed (#123084)

Author: smalyshev

muted-tests.yml

@@ -257,9 +257,6 @@ tests:
 - class: org.elasticsearch.test.rest.ClientYamlTestSuiteIT
   method: test {yaml=snapshot.delete/10_basic/Delete a snapshot asynchronously}
   issue: https://github.com/elastic/elasticsearch/issues/122102
-- class: org.elasticsearch.search.SearchCancellationIT
-  method: testCancelFailedSearchWhenPartialResultDisallowed
-  issue: https://github.com/elastic/elasticsearch/issues/121719
 - class: org.elasticsearch.datastreams.TSDBPassthroughIndexingIT
   issue: https://github.com/elastic/elasticsearch/issues/121716
 - class: org.elasticsearch.smoketest.SmokeTestMonitoringWithSecurityIT

server/src/internalClusterTest/java/org/elasticsearch/search/SearchCancellationIT.java

@@ -267,7 +267,7 @@ public void testCancelFailedSearchWhenPartialResultDisallowed() throws Exception
                 if (letOneShardProceed.compareAndSet(false, true)) {
                     // Let one shard continue.
                 } else {
-                    safeAwait(shardTaskLatch); // Block the other shards.
+                    safeAwait(shardTaskLatch, TimeValue.timeValueSeconds(30)); // Block the other shards.
                 }
             });
         }