Summary:
* Current ci is missing an important part to test the whole part. With this we can make sure the js and android part compiles.
* Ensure the current android proguard rules is okay.
The `my-release-key.keystore` is just a copy of debug.keystore in `react-native/keystores`.
Pass all ci.
none
[GENERAL] [ENHANCEMENT] [CI] - Add RNTester to ci
Closes https://github.com/facebook/react-native/pull/19673
Differential Revision: D8435419
Pulled By: hramos
fbshipit-source-id: d3d92a5d1b8477c1f298643cc96695769e5c93ea
gengjiawen