[CI] SortedSetOrdinalsBuilderTests testReader failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic-platform-support #9472 / sles-15_platform-support-unix
• elasticsearch-periodic #9447 / openjdk24_checkpart3_java-matrix

Reproduction Line:

./gradlew ":x-pack:plugin:esql:compute:test" --tests "org.elasticsearch.compute.lucene.read.SortedSetOrdinalsBuilderTests.testReader" -Dtests.seed=367901CBAD98E4F0 -Dtests.locale=kw-Latn-GB -Dtests.timezone=Europe/Malta -Druntime.java=24

Applicable branches:
main

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.NullPointerException: Cannot invoke "org.apache.lucene.index.SortedSetDocValues.advanceExact(int)" because "valuesDV" is null

Issue Reasons:

• [main] 2 failures in test testReader (1.3% fail rate in 154 executions)

Note:
This issue was created using new test triage automation. Please report issues or feedback to es-delivery.

[elasticsearchmachine]

Pinging @elastic/es-analytical-engine (Team:Analytics)