ink 4.4.x breaks text input tests

[ohana54]

Hi,

We have failing tests after upgrading to the latest version (currently 4.4.1).
The tests use ink-text-input, and break due to the user input not being accepted/rendered.

I went to the ink-text-input repo, upgraded ink there, and saw its tests break as well.
Note I did patch ink-testing-library with the missing ref/unref methods, it breaks on expecting the user input to be rendered but it isn't.

I guess it's related to the testkit emitting a data event, but in ink you switched to readable?

[vadimdemedes]

Duplicate of #625.