[jdk17] RFR: 8268350: Remove assert that ensures thread identifier remains the same

[Thomas Schatzl]

On Mon, 28 Jun 2021 16:06:32 GMT, Leo Korinth <lkorinth at openjdk.org> wrote:

> This fix is divided into two commits: The first commit reverts the temporary 8268537 fixup to the problem that is properly resolved in this PR, the second commit removes the assert that ensures thread identifier remains the same for JFR events. It also always reassign a new thread identifier as it can not be known that it will remain the same after first assignment.

Lgtm.

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Marked as reviewed by tschatzl (Reviewer).

PR: https://git.openjdk.java.net/jdk17/pull/161