Store initialValue before dispatching 'focus' which might reset it

[holyjak]

I think that node.initialValue should be stored before dispatching focus:

react-trigger-change/lib/change.js

Line 107 in 9d2fe4a

event.initEvent('focus', false, false);

The reason is that the input might have a custom onFocus handler that likely changes the component state -> triggers rerender -> resets the value according to the state.

Thank you!