Example plugin test compile error

[hendrikmuhs]

CI Link

https://elasticsearch-ci.elastic.co/job/elastic+elasticsearch+main+periodic+example-plugins/268/console

Repro line

gradlew :rescore:compileJava

Does it reproduce?

Yes

Applicable branches

main

Failure history

No response

Failure excerpt

Looks like a regression caused by #88735

/CC @jdconrad

[elasticsearchmachine]

Pinging @elastic/es-search (Team:Search)

[jtibshirani]

I wonder if we should make sure example compile errors fail PR builds. I'm not sure why this compile task didn't run as part of the main build. CC @elastic/es-delivery