message: fix interaction between otr and omemo
diff: @@ -90,7 +90,7 @@ export default class OTRPlugin extends EncryptionPlugin {
  }
  private preSendMessageProcessor = (contact: Contact, message: Message) => {
  - if (contact.getEncryptionState() === EncryptionState.Plaintext) {
  + if (contact.getEncryptionState() === EncryptionState.Plaintext || contact.getEncryptionPluginName() !== OTRPlugin.getName()) {
  return Promise.resolve([contact, message]);
  }
  