Commit f7478ef42d for frr

commit f7478ef42d5b8621ffff90673f266daa6f02e6b3
Merge: 326eba01a4 0ad337998a
Author: Russ White <russ@riw.us>
Date:   Thu Nov 5 15:19:33 2026 -0500

    Merge pull request #24215 from donaldsharp/nhg_refcount_fix

    tests: Make zebra_nhg_keeparound_refcount not depend on timing