git: openjdk/jdk-sandbox: shen-late-barriers: Fix x86_64 TestReferenceCAS no-coops failure

[duke]

Changeset: aaa486cb
Branch: shen-late-barriers
Author:    Aleksey Shipilev <aleksey at shipilev.net>
Date:      2025-11-24 13:11:39 +0000
URL:       https://git.openjdk.org/jdk-sandbox/commit/aaa486cb54fa4203654ac8ce81bba47034199579

Fix x86_64 TestReferenceCAS no-coops failure

! src/hotspot/cpu/x86/gc/shenandoah/shenandoahBarrierSetAssembler_x86.cpp