[jdk11u-dev] RFR: 8212155: Race condition when posting dynamic_code_generated event leads to JVM crash

[Kerem Kat]

Backport of [JDK-8212155](https://bugs.openjdk.org/browse/JDK-8212155).

The patch did not apply cleanly due to a merge conflict. The original code `JvmtiThreadState::state_for(JavaThread::current())` had already been refactored to `JavaThread::current()->jvmti_thread_state()` in this branch.

I have also removed the `@requires vm.jvmti` tag from the test, as it is not supported by the jtreg version in JDK 11.

The `DynamicCodeGeneratedTest` was confirmed to fail without this patch and passes with it.

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Commit messages:
 - Backport 64ec8b3e5c8a8d44c92591710d73b833f13c1500

Changes: https://git.openjdk.org/jdk11u-dev/pull/3051/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=3051&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8212155
  Stats: 124 lines in 3 files changed: 117 ins; 0 del; 7 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/3051.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/3051/head:pull/3051

PR: https://git.openjdk.org/jdk11u-dev/pull/3051