RFR: 8349358: [JMH] Cannot access class jdk.internal.vm.ContinuationScope

[SendaoYan]

Hi all,

Several JMH tests fails "cannot access class jdk.internal.vm.ContinuationScope (in module java.base) because module java.base does not export jdk.internal.vm to unnamed module". This PR add VM option `--add-exports=java.base/jdk.internal.vm=ALL-UNNAMED` to fix the JMH test bug.

Change has been verified locally, test-fix only, no risk.

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Commit messages:
 - 8349358: [JMH] Cannot access class jdk.internal.vm.ContinuationScope

Changes: https://git.openjdk.org/jdk/pull/23437/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23437&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8349358
  Stats: 6 lines in 3 files changed: 0 ins; 0 del; 6 mod
  Patch: https://git.openjdk.org/jdk/pull/23437.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23437/head:pull/23437

PR: https://git.openjdk.org/jdk/pull/23437