[CI] TopTests class failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-intake #27958 / part3
• elasticsearch-periodic-java-ea #12 / single-processor-node-tests
• elasticsearch-intake #27940 / part3
• elasticsearch-pull-request #89899 / part-3
• elasticsearch-pull-request #89877 / part-3
• elasticsearch-pull-request #89836 / part-3
• elasticsearch-intake #27921 / part3
• elasticsearch-intake #27913 / part3
• elasticsearch-pull-request #89785 / part-3
• elasticsearch-pull-request #89784 / part-3

Reproduction Line:

./gradlew ":x-pack:plugin:esql:test" --tests "org.elasticsearch.xpack.esql.expression.function.aggregate.TopTests.testGroupingAggregateToString {TestCase=<far future dates>}" -Dtests.seed=A4CC6D692C14C985 -Dtests.locale=ur -Dtests.timezone=Europe/Monaco -Druntime.java=24

Applicable branches:
main

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.AssertionError: 
Expected: "TopLong"
     but: was "MinLong"

Issue Reasons:

• [main] 13 failures in class org.elasticsearch.xpack.esql.expression.function.aggregate.TopTests (3.9% fail rate in 334 executions)
• [main] 4 failures in step part3 (8.0% fail rate in 50 executions)
• [main] 8 failures in step part-3 (4.0% fail rate in 200 executions)
• [main] 4 failures in pipeline elasticsearch-intake (8.0% fail rate in 50 executions)
• [main] 8 failures in pipeline elasticsearch-pull-request (4.2% fail rate in 190 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)

[alex-spies]

@nik9000 , this seems to be related to #133760. Somehow we got the aggregator strings wrong for TOP. Could you please have a look?