Preparation for installing idle peers with ML-KEM strict-mode key material
(security review of #7098, finding F-002). The lazy connection manager
receives a peer description from two call sites that each spell out the
same struct literal; the new field should be added once, not kept in sync in
two places.
Pure refactor, no behaviour change: both sites call newLazyPeerConfig.
riccardom
c1118f6a78