CoreValuesSourceTypeTests.testDatePrepareRoundingWithDocs fails

[javanna]

Build scan: https://gradle-enterprise.elastic.co/s/7afw66rl5du44/console-log?task=:server:test

Repro line: ./gradlew ':server:test' --tests "org.elasticsearch.search.aggregations.support.CoreValuesSourceTypeTests.testDatePrepareRoundingWithDocs" -Dtests.seed=28C9A26E02E5DBC1 -Dtests.security.manager=true -Dtests.locale=nl-BE -Dtests.timezone=Etc/Universal -Druntime.java=11

Reproduces locally?: yes

Applicable branches: master and 7.x

This is caused by #63403 , a fix was attempted for the test but it does not work 100% of the times.

[elasticmachine]

Pinging @elastic/es-analytics-geo (:Analytics/Aggregations)