[#1680] morph/netmap: Adopt to recent contract changes

After recent Netmap contract changes all read methods which return
network map (either candidates or snapshots) encode node descriptors
into same structure.

Decode `netmap.Node` contract-side structure from the call results.
Replace node state with the value from the `netmap.Node.State` field.

Signed-off-by: Leonard Lyubich <ctulhurider@gmail.com>

cmd/neofs-adm/internal/modules/morph/remove_node.go

@@ -45,7 +45,7 @@ func removeNodesCmd(cmd *cobra.Command, args []string) error {
 	bw := io.NewBufBinWriter()
 	for i := range nodeKeys {
 		emit.AppCall(bw.BinWriter, nmHash, "updateStateIR", callflag.All,
-			int64(netmapcontract.OfflineState), nodeKeys[i].Bytes())
+			int64(netmapcontract.NodeStateOffline), nodeKeys[i].Bytes())
 	}
 
 	if err := emitNewEpochCall(bw, wCtx, nmHash); err != nil {