[Bug Report] table: Multiple select

[elpsycongroo]

Element UI version

2.9.1

OS/Browsers version

Win10/Chromium 69.0

Vue version

2.6.10

Reproduction Link

https://codepen.io/anon/pen/qGgmdX

Steps to reproduce

1. Bind the 'select' event on a multiple select table.
2. Click the 'TOGGLE!' button, it will call table's function: 'toggleRowSelection()'
3. The function triggers the 'select' event which is not called manually. Because there's an alert dialog showed.

What is Expected?

The 'select' event only triggers when USER clicks the checkbox in a row in the version 2.6.3.
Any function call (e.g.: toggleRowSelection()) SHOULD NOT trigger this event.

What is actually happening?

Call MultipleTable's function: 'toggleRowSelection()' will trigger its 'select' event in version 2.9.1.

[mtlswz]

我也遇到了 目前只能将版本回退到2.8才能正常