[crac] RFR: 8364931: [CRaC] Stabilize recompiler tests [v2]

[Radim Vansa]

On Fri, 8 Aug 2025 13:08:51 GMT, Timofei Pushkin <tpushkin at openjdk.org> wrote:

>> Stabilizes recompiler tests:
>> - `NaturalDecompilationTest` now ensures the method is not enqueued for another compilation before proceeding with the test.
>> - In `RecompilationFlagsTest` recompilation waiting period of a predefined length is replaced with waiting for the methods to get enqueued and dequeued to/from the compilation queue.
>
> Timofei Pushkin has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Improve assertions in NaturalDecompilationTest

Marked as reviewed by rvansa (Committer).

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PR Review: https://git.openjdk.org/crac/pull/259#pullrequestreview-3101376528