SpscSender<T>.fromTransferable constructor
Reconstructs a remote-only sender from a transferable representation.
Use with toTransferable to transfer a sender across Web Workers
or Isolates. The reconstructed sender always uses the remote path.
Implementation
factory SpscSender.fromTransferable(Map<String, Object?> data) =>
SpscSender._(-1, unpackPort(data['port']!),
metricsId: data['metricsId'] as String?);