message: [IMPROVEMENT] Checks if custom OAuth button should be shown
diff: @@ -806,9 +806,11 @@ const RocketChat = {
  }
  },
  _determineAuthType(services) {
  - const { name, custom, service } = services;
  + const {
  + name, custom, showButton = true, service
  + } = services;
  - if (custom) {
  + if (custom && showButton) {
  return 'oauth_custom';
  }
  