Increase await timeout for testCancelFailedSearchWhenPartialResultDisallowed (elastic#123084) (elastic#123335)

(cherry picked from commit 688542b)

# Conflicts:
#	muted-tests.yml

Author: smalyshev

muted-tests.yml

@@ -459,6 +459,3 @@ tests:
 - class: org.elasticsearch.xpack.test.rest.XPackRestIT
   method: test {p0=data_stream/80_resolve_index_data_streams/Resolve index with hidden and closed indices}
   issue: https://github.com/elastic/elasticsearch/issues/123081
-- class: org.elasticsearch.search.SearchCancellationIT
-  method: testCancelFailedSearchWhenPartialResultDisallowed
-  issue: https://github.com/elastic/elasticsearch/issues/121719

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.
                 }
             });
         }