Bluetooth: Mesh: Fix node identity interleave multiple subnets

Reduce advertising duration to `max_timeout` when advertising node
identity for multiple subnets. This will let the node to interleave
subnets for NODE_ID_TIMEOUT.

Signed-off-by: Pavel Vasilyev <[email protected]>

Author: PavelVPV

subsys/bluetooth/mesh/proxy_srv.c

@@ -590,7 +590,7 @@ static int gatt_proxy_advertise(struct bt_mesh_subnet *sub)
 			uint32_t active = k_uptime_get_32() - sub->node_id_start;
 
 			if (active < NODE_ID_TIMEOUT) {
-				remaining = NODE_ID_TIMEOUT - active;
+				remaining = MIN(remaining, NODE_ID_TIMEOUT - active);
 				BT_DBG("Node ID active for %u ms, %d ms remaining",
 				       active, remaining);
 				err = node_id_adv(sub, remaining);