[CI] MvPercentileTests testFold {TestCase=field: <positive mv SORTED_ASCENDING longs>, percentile: <small positive double>} failing

Build Scans:

Reproduction Line:

./gradlew ":x-pack:plugin:esql:test" --tests "org.elasticsearch.xpack.esql.expression.function.scalar.multivalue.MvPercentileTests.testFold {TestCase=field: <positive mv DEDUPLICATED_UNORDERD longs>, percentile: <small positive double>}" -Dtests.seed=AF0E840956063E28 -Dtests.locale=es-CR -Dtests.timezone=Brazil/DeNoronha -Druntime.java=22

Applicable branches: main

Reproduces locally?: N/A

Failure History: See dashboard&_a=(controlGroupInput:(chainingSystem:HIERARCHICAL,controlStyle:twoLine,ignoreParentSettings:(ignoreFilters:!f,ignoreQuery:!f,ignoreTimerange:!f,ignoreValidations:!t),panels:('0c0c9cb8-ccd2-45c6-9b13-96bac4abc542':(explicitInput:(dataViewId:fbbdc689-be23-4b3d-8057-aa402e9ed0c5,enhancements:(),fieldName:task.keyword,grow:!t,id:'0c0c9cb8-ccd2-45c6-9b13-96bac4abc542',searchTechnique:wildcard,selectedOptions:!(),singleSelect:!t,title:'Gradle%20Task',width:medium),grow:!t,order:0,type:optionsListControl,width:small),'144933da-5c1b-4257-a969-7f43455a7901':(explicitInput:(dataViewId:fbbdc689-be23-4b3d-8057-aa402e9ed0c5,enhancements:(),fieldName:name.keyword,grow:!t,id:'144933da-5c1b-4257-a969-7f43455a7901',searchTechnique:wildcard,selectedOptions:!('testFold%20%7BTestCase%3Dfield%3A%20%3Cpositive%20mv%20SORTED_ASCENDING%20longs%3E%2C%20percentile%3A%20%3Csmall%20positive%20double%3E%7D'),title:Test,width:medium),grow:!t,order:2,type:optionsListControl,width:medium),'4e6ad9d6-6fdc-4fcc-bf1a-aa6ca79e0850':(explicitInput:(dataViewId:fbbdc689-be23-4b3d-8057-aa402e9ed0c5,enhancements:(),fieldName:className.keyword,grow:!t,id:'4e6ad9d6-6fdc-4fcc-bf1a-aa6ca79e0850',searchTechnique:wildcard,selectedOptions:!('org.elasticsearch.xpack.esql.expression.function.scalar.multivalue.MvPercentileTests'),title:Suite,width:medium),grow:!t,order:1,type:optionsListControl,width:medium)))))

Failure Message:

java.lang.AssertionError: 
Expected: <2878447304824984L>
     but: was <2878447304824985L>

Issue Reasons:

[main] 2 failures in test testFold {TestCase=field: , percentile: } (0.2% fail rate in 873 executions)

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elastic / elasticsearch

[CI] MvPercentileTests testFold {TestCase=field: <positive mv SORTED_ASCENDING longs>, percentile: <small positive double>} failing #113007