[CI] DateFieldMapperTests testChangeLocale failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic #4245 / openjdk23_java-matrix
• elasticsearch-periodic #4241 / openjdk23_java-matrix
• elasticsearch-periodic #4237 / openjdk23_java-matrix
• elasticsearch-periodic #4233 / openjdk23_java-matrix
• elasticsearch-periodic #4229 / openjdk23_java-matrix
• elasticsearch-periodic #4225 / openjdk23_java-matrix
• elasticsearch-periodic #4221 / openjdk23_java-matrix
• elasticsearch-periodic #4217 / openjdk23_java-matrix
• elasticsearch-periodic #4213 / openjdk23_java-matrix
• elasticsearch-periodic #4209 / openjdk23_java-matrix

Reproduction Line:

./gradlew ':server:test' --tests "org.elasticsearch.index.mapper.DateFieldMapperTests.testChangeLocale" -Dtests.seed=87C20F303F6F50BA -Dtests.locale=om -Dtests.timezone=SystemV/MST7 -Druntime.java=23

Applicable branches:
7.17

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

org.elasticsearch.index.mapper.MapperParsingException: failed to parse field [field] of type [date] in document with id '1'. Preview of field's value: 'Mi, 06 Dez 2000 02:55:00 -0800'

Issue Reasons:

• [7.17] 20 consecutive failures in step openjdk23_java-matrix
• [7.17] 20 failures in test testChangeLocale (2.6% fail rate in 774 executions)
• [7.17] 20 failures in step openjdk23_java-matrix (100.0% fail rate in 20 executions)
• [7.17] 20 failures in pipeline elasticsearch-periodic (95.2% fail rate in 21 executions)

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

[elasticsearchmachine]

Pinging @elastic/es-storage-engine (Team:StorageEngine)