NativeInputTest issues

[obigu]

Testing the new Native Input API running NativeInpuitTest on iOS I've run into some issues some of which may affect the API itself.

Issue 1

1. Click on "Placeholder" text field to open keyboard
2. Touch anywhere on the screen -> App crashes

Issue 2

1. Click on "Open TextInput" button
2. Click again on "Open TextInput" button. -> App crashes

I understand it should not be possible to open the keyboard twice but I'd expect it not to crash if called twice.

Issue 3
Keyboard doesn't open on Simulator (is this expected?)

Issue 4 (Minor)
Part of the test UI is displayed under the Insets (iPhone notch)