[BUG] Failing unit test for HybridCollectorManager

[martin-gaievski]

What is the bug?

One of integ tests are failing if I execute following command:

./gradlew ':test' --tests "org.opensearch.neuralsearch.search.query.HybridCollectorManagerTests.testRescoreWithConcurrentSegmentSearch_whenMatchedDocsAndRescore_thenSuccessful" -Dtests.seed=F7CFD4E7CDCC6ADD

I do replicate the failure consistently in following environment

  Gradle Version        : 8.10.2
  OS Info               : Mac OS X 15.3.1 (aarch64)
  JDK Version           : 21 (Amazon Corretto JDK)

if I drop the test seed then error became flaky, most of times test will pass