[CI] SparseVectorFieldMapperTests testPruningScenarios failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-intake #26833 / part1
• elasticsearch-intake #26831 / part1
• elasticsearch-pull-request #85556 / part-1

Reproduction Line:

./gradlew ":server:test" --tests "org.elasticsearch.index.mapper.vectors.SparseVectorFieldMapperTests.testPruningScenarios" -Dtests.seed=44BCBDF411D723BE -Dtests.locale=fr-SY -Dtests.timezone=Asia/Phnom_Penh -Druntime.java=24

Applicable branches:
main

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.AssertionError: 
Expected: iterable with items [<(FeatureQuery(field=field, feature=rare1_keep_strict, function=LinearFunction))^0.9>, <(FeatureQuery(field=field, feature=rare2_keep_strict, function=LinearFunction))^0.85>, <(FeatureQuery(field=field, feature=medium2_keep_default, function=LinearFunction))^0.25>, <(FeatureQuery(field=field, feature=medium1_keep_strict, function=LinearFunction))^0.5>] in any order
     but: not matched: <(FeatureQuery(field=field, feature=common1_drop_default, function=LinearFunction))^0.1>

Issue Reasons:

• [main] 2 consecutive failures in step part1
• [main] 2 consecutive failures in pipeline elasticsearch-intake
• [main] 3 failures in test testPruningScenarios (21.4% fail rate in 14 executions)
• [main] 2 failures in step part1 (33.3% fail rate in 6 executions)
• [main] 2 failures in pipeline elasticsearch-intake (33.3% fail rate in 6 executions)

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

[elasticsearchmachine]

This has been muted on branch main

Mute Reasons:

• [main] 2 failures in test testPruningScenarios (16.7% fail rate in 12 executions)

Build Scans:

• elasticsearch-intake #26831 / part1
• elasticsearch-pull-request #85556 / part-1

[elasticsearchmachine]

Pinging @elastic/search-eng (Team:SearchOrg)

[elasticsearchmachine]

Pinging @elastic/search-relevance (Team:Search - Relevance)

[mromaios]

This is probably related to the recent refactoring of those tests in refactor(test): add sparse vector pruning tests #132264.

It's reproducable locally by increasing the number of testing iterations here: https://github.com/mromaios/elasticsearch/blob/976f947db6f4e937d332de2fd0ba61156ad9d2ef/server/src/test/java/org/elasticsearch/index/mapper/vectors/SparseVectorFieldMapperTests.java#L768