Convert the last Unit Tests to Kotlin (#42078)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/42078

Resubmit of D51891716 and D52033328

I'm doing a pass and converting the last Java Unit Tests we had to Kotlin
I've also re-enabled multiple tests that were disabled in the past.

Changelog:
[Internal] [Changed] - Convert the last Unit Tests to Kotlin

Reviewed By: rshest

Differential Revision: D52430728

fbshipit-source-id: e6b4a6ed88d852024d959cf5148e992e97a84434