talm apply: maintenance-connection warning lacks per-node prefix on multi-node insecure #191

Multi-node talm apply output prefixes the drift / divergence headers with the node identifier (talm: drift preview (node 192.0.2.10)), but the maintenanceConnectionMessage line that fires on the insecure path is bare:

talm: drift verification unavailable on maintenance connection
talm: drift verification unavailable on maintenance connection

On a multi-node insecure apply (rare — usually only during bootstrap or recovery) the operator sees the same line twice with no way to tell which node it came from. Inconsistent with the per-node-prefixed drift / divergence headers.

Scope: thread nodeID through the existing previewDrift / verifyAppliedState callsites and use the existing nodePrefix helper. One-liner per caller. A pinning test could mirror TestPreviewDrift_MultiNode_HeaderCarriesNodeID with the insecure path branch.