git: openjdk/loom: fibers: ReferencesGC test fixed to bake in loom repo.

[duke]

Changeset: 94424146
Author:    lmesnik <leonid.mesnik at oracle.com>
Date:      2022-04-28 17:13:28 +0000
URL:       https://git.openjdk.java.net/loom/commit/944241462fbb052e322db79d178c9df14ec69e3d

ReferencesGC test fixed to bake in loom repo.

! test/hotspot/jtreg/ProblemList.txt
! test/hotspot/jtreg/vmTestbase/gc/gctests/ReferencesGC/ReferencesGC.java