[Backport] [Oracle GraalVM] [GR-67437] Backport to 23.1: NPE in dead thread disposal.

[elkorchi]

What would you like to backport?

What would you like to backport?
Oracle GraalVM backported commits:

(oracle/graal@d95db68)

Describe the motivation for the backport.

Describe the motivation for the backport.
Backported to Oracle GraalVM for JDK 21, fix version: graalvm-23.1.9

[bulasevich]

It is not a standalone change. It must be backported over oracle/graal#9721