Fix: react-native init command error in test

[Kwonkunkun]

error in

npm run test:setup:android

have no global react-native case
all log

npm run test:android
....
Running command: react-native init TestCodePush
/bin/sh: react-native: command not found
Error: Command failed: react-native init TestCodePush
/bin/sh: react-native: command not found
...

have global react-native case
all log

...
error Your Ruby version is 2.6.8, but your Gemfile specified 2.7.5
...

add npx command in test/test.ts

...
 ✔ sets up tests correctly (158788ms)
...

[thewulf7]

Merging to help with fixing the build