git: openjdk/jdk21u-dev: master: 8305186: Reference.waitForReferenceProcessing should be more accessible to tests

[SendaoYan]

Changeset: 6bf719d9
Branch: master
Author:    SendaoYan <syan at openjdk.org>
Date:      2025-10-24 06:35:34 +0000
URL:       https://git.openjdk.org/jdk21u-dev/commit/6bf719d97284486af64625efa826537e01c238c6

8305186: Reference.waitForReferenceProcessing should be more accessible to tests

Backport-of: d8f012ea2a0514020434d5db6047e36941e9349b

! test/lib/jdk/test/whitebox/WhiteBox.java