RFR: 8282200: ShouldNotReachHere() reached by AsyncGetCallTrace after JDK-8280422

[Johannes Bechberger]

On Mon, 21 Feb 2022 14:43:27 GMT, Johannes Bechberger <duke at openjdk.java.net> wrote:

> Fixes the mentioned bug by replacing the check in AsyncGetCallTrace using the newly introduced method `JavaThread::thread_from_jni_environment`.

Related to https://github.com/openjdk/jdk/pull/7193

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PR: https://git.openjdk.java.net/jdk/pull/7559