IGNITE-28943 Fix incorrect test file name in MessageProcessorTest

[wernerdv]

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• Branch: pull/13423/head
• Base: master
• Tested commit: a218516

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[github-actions]

Possible compatibility issues. Please, check rolling upgrade cases

This PR modifies protected classes (with Order annotation).
Changes to these classes can break rolling upgrade compatibility.

Affected files:

• modules/core/src/test/java/org/apache/ignite/internal/codegen/MessageProcessorTest.java