message: fix: avoid logging same error twice when thrown by user in global handler
  fix
diff: @@ -49,9 +49,13 @@ function globalHandleError (err, vm, info) {
  try {
  return config.errorHandler.call(null, err, vm, info)
  } catch (e) {
  + // if the user intentionally throws the original error in the handler,
  + // do not log it twice
  + if (e !== err) {
  logError(e, null, 'config.errorHandler')
  }
  }
  + }
  logError(err, vm, info)
  }
  