[CI] LogsDbVersusLogsDbReindexedIntoStandardModeChallengeRestIT class failing

Build Scans:

• elasticsearch-periodic #12788 / openjdk21_checkpart2_java-fips-matrix
• elasticsearch-pull-request #179609 / part-2
• elasticsearch-pull-request #179609 / part-2

Reproduction Line:

./gradlew ":x-pack:plugin:logsdb:javaRestTest" --tests "org.elasticsearch.xpack.logsdb.qa.LogsDbVersusLogsDbReindexedIntoStandardModeChallengeRestIT.testMatchAllQuery" -Dtests.seed=6411902F53B89117 -Dtests.locale=yo -Dtests.timezone=SystemV/YST9YDT -Druntime.java=21 -Dtests.fips.enabled=true

Applicable branches: main

Reproduces locally?: N/A

Failure History: See dashboard

Failure Message:

java.net.ConnectException: Connection refused

Issue Reasons:

• [main] 1 consecutive failures in class org.elasticsearch.xpack.logsdb.qa.LogsDbVersusLogsDbReindexedIntoStandardModeChallengeRestIT
• [main] 1 consecutive failures in step openjdk21_checkpart2_java-fips-matrix
• [main] 1 consecutive failures in pipeline elasticsearch-periodic
• [main] 3 failures in class org.elasticsearch.xpack.logsdb.qa.LogsDbVersusLogsDbReindexedIntoStandardModeChallengeRestIT (0.8% fail rate in 357 executions)
• [main] 2 failures in step part-2 (0.9% fail rate in 220 executions)

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