RFR: 8377845: Restore regtest for JDK-8324881 with DiagnoseSyncOnValueBasedClasses=2

[Alex Menkov]

Testcase for JDK-8324881 was mistakenly removed by JDK-8359437 instead of removing only -XX:LockingMode argument.
The fix restores the test case.

Testing: updated test on all platforms

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Commit messages:
 - fix

Changes: https://git.openjdk.org/jdk/pull/29722/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29722&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8377845
  Stats: 9 lines in 1 file changed: 9 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/29722.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29722/head:pull/29722

PR: https://git.openjdk.org/jdk/pull/29722