[lilliput-jdk21u:lilliput] RFR: 8357068: Add JVMCIUseFastLocking back and set it according to LockingMode

[duke]

On Tue, 20 May 2025 20:19:21 GMT, Cesar Soares Lucas <cslucas at openjdk.org> wrote:

> Add the `JVMCIUseFastLocking` flag back as per description in the linked JBS issue.
> Tested on Linux x64 with Graal unittests and JTREG tier 1-3 and TCK.

@JohnTortugo 
Your change (at version c6bafd428bed9e420068ac92f06f0f703b525735) is now ready to be sponsored by a Committer.

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PR Comment: https://git.openjdk.org/lilliput-jdk21u/pull/38#issuecomment-2898688604