Commit 527c8d5ae0 for frr

commit 527c8d5ae0e8b7a1faf58c64a26a1f71ac932423
Merge: c460ab9752 8eb5563c70
Author: Russ White <russ@riw.us>
Date:   Thu Oct 29 15:59:33 2026 -0400

    Merge pull request #23839 from alxrxs/isisd-p2p-level-change

    isisd: keep LSPs flowing when an up p2p adjacency changes levels