git: openjdk/jdk21u-dev: master: 8342905: Thread.setContextClassloader from thread in FJP commonPool task no longer works after JDK-8327501 redux

[Francisco Ferrari Bihurriet]

Changeset: 3f648b4f
Branch: master
Author:    Francisco Ferrari Bihurriet <fferrari at openjdk.org>
Date:      2024-12-03 19:05:42 +0000
URL:       https://git.openjdk.org/jdk21u-dev/commit/3f648b4f65dac89d91ae318f410e66e596589f3b

8342905: Thread.setContextClassloader from thread in FJP commonPool task no longer works after JDK-8327501 redux

Reviewed-by: sgehwolf, mbalao
Backport-of: 872ae1347198408ffd62559ca8c1a7420c4a8108

! src/java.base/share/classes/java/lang/System.java
! src/java.base/share/classes/java/util/concurrent/ForkJoinPool.java
! src/java.base/share/classes/jdk/internal/access/JavaLangAccess.java