Summary:
What existing problem does the pull request solve?
this fixes#13506 and #12717 where:
- there are some issues when pressing enter with some keyboard
- blurOnSubmit is not working with multiline
I think this should be in stable branch as this is pretty critical, isn't it?
- just create a TextInput with multiline and press enter with samsung keyboard
before, it won't create a new line, now it will.
- just create a TextInput with multiline and blurOnSubmit true and press enter
before, it won't blur, and wont create a new line (on some keyboard, it will create a new line), now it will blur only
Closes https://github.com/facebook/react-native/pull/13890
Reviewed By: achen1
Differential Revision: D5333464
Pulled By: shergin
fbshipit-source-id: a0597d1b1967d4de1486e728e03160e1bb15afeb