RFR: 8350889: GenShen: Break out of infinite loop of old GC cycles part2

[William Kemper]

On Tue, 18 Mar 2025 22:36:49 GMT, Kelvin Nilsen <kdnilsen at openjdk.org> wrote:

> A recent commit failed to address all paths by which an infinite loop of old GC cycles might occur.  This new PR handles one other case related to the original problem.

LGTM

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Marked as reviewed by wkemper (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/24106#pullrequestreview-2696496570