SearchCancellationIT#testCancelFailedSearchWhenPartialResultDisallowed fails

[javanna]

Build scan: https://gradle-enterprise.elastic.co/s/khmvuaugydbz2/console-log?task=:server:internalClusterTest

Repro line: gradlew ':server:internalClusterTest' --tests "org.elasticsearch.search.SearchCancellationIT.testCancelFailedSearchWhenPartialResultDisallowed" -Dtests.seed=B02E83C609386A57 -Dtests.security.manager=true -Dtests.locale=en-SG -Dtests.timezone=PRT -Druntime.java=11

Reproduces locally?: No

Applicable branches: master

Failure history: newly introduced test, see #63520

Failure excerpt:

org.elasticsearch.search.SearchCancellationIT > testCancelFailedSearchWhenPartialResultDisallowed FAILED |  
-- | --
  | java.lang.AssertionError: |  
  | Expected: a collection with size <1> |  
  | but: collection size was <0> |  
  | at __randomizedtesting.SeedInfo.seed([B02E83C609386A57:FA326EC8B97B8D6F]:0) |  
  | at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:18) |  
  | at org.junit.Assert.assertThat(Assert.java:956) |  
  | at org.junit.Assert.assertThat(Assert.java:923) |  
  | at org.elasticsearch.search.SearchCancellationIT.lambda$testCancelFailedSearchWhenPartialResultDisallowed$5(SearchCancellationIT.java:327) |  
  | at org.elasticsearch.test.ESTestCase.assertBusy(ESTestCase.java:939) |  
  | at org.elasticsearch.search.SearchCancellationIT.testCancelFailedSearchWhenPartialResultDisallowed(SearchCancellationIT.java:325)

[elasticmachine]

Pinging @elastic/es-search (:Search/Search)