RFR: 8374371: Failed assertion in G1HeapRegion gtest

[Thomas Schatzl]

On Sat, 27 Dec 2025 05:10:23 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

> Please review this simple change to the G1HeapRegion gtest to eliminate a
> failed assertion when run in some configurations.
> 
> Testing: mach5 tier1. Locally (linux-aarch64) ran the test directly, in a
> configuration that was failing and no longer fails after the change.

Marked as reviewed by tschatzl (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/29000#pullrequestreview-3615522183