CAMEL-20583: fixed compilation problem on static initialization

[orpiske]

No description provided.

[github-actions]

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[orpiske]

Fixes this: https://ci-builds.apache.org/job/Camel/job/Camel%20JDK21/job/main/344/console

Also, as a note, the CI build for JDK 21 was stuck for 17 days, which is why we did not catch it before.

[davsclaus]

Thanks