RFR: 8375787: compiler/vectorapi/TestCastShapeBadOpc.java fails with release VMs

[Jie Fu]

Add `-XX:+UnlockDiagnosticVMOptions` for release VMs.

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Commit messages:
 - 8375787: compiler/vectorapi/TestCastShapeBadOpc.java fails with release VMs

Changes: https://git.openjdk.org/jdk/pull/29336/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29336&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8375787
  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/29336.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29336/head:pull/29336

PR: https://git.openjdk.org/jdk/pull/29336