[crac] RFR: 8352408: [CRaC] Minor CRE API improvements

[duke]

On Wed, 19 Mar 2025 11:39:20 GMT, Timofei Pushkin <tpushkin at openjdk.org> wrote:

> Minor fixups for CRE API:
> 
> `crexec` is also adopted to conform to the restore data API docs change.

@TimPushkin 
Your change (at version 716aed3ad14224b5ca22469ee9666e7ba9ef239b) is now ready to be sponsored by a Committer.

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PR Comment: https://git.openjdk.org/crac/pull/214#issuecomment-2736342024