8364927: Add @requires annotation to TestReclaimStringsLeaksMemory.java

[dev-jonghoonpark]

This change updates TestReclaimStringsLeaksMemory.java to properly guard against unsupported GC arguments.
Previously, the test only checked @requires vm.gc == "null".

The fix separates the tests and adds explicit @requires clauses for each GC configuration to ensure the test only runs when supported.

This prevents test failures on VMs that do not support the specified GC.

(This is my first contribution to the JDK. Thank you for your review and guidance.)

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Issue

• JDK-8364927: Add @requires annotation to TestReclaimStringsLeaksMemory.java (Enhancement - P4)

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[bridgekeeper]

Hi @dev-jonghoonpark, welcome to this OpenJDK project and thanks for contributing!

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[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[openjdk]

@dev-jonghoonpark The following label will be automatically applied to this pull request:

• hotspot-gc

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[dev-jonghoonpark]

/signed

[bridgekeeper]

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[dev-jonghoonpark]

I previously signed the OCA and have already contributed to Graal.

However, the GitHub Actions checks are not passing.
Is there anything else I need to do?